Do-it-yourself metal-shukachi schemes and descriptions. Original cover and designer dahi: Metalloiskatel. How to make a highly sensitive metal juggler with his own hands in home minds from hand-me-down materials. Folding techniques, basic

Additions to buildings to detect metal objects in weakly conductive mediums are called metal detectors or metal detectors. Їx can be victorious for black and color metals. A self-closing metal shackle for building coins makes a dribbling on an opening of 10 to 50 cm, and a volume of metal of 0.5 to 3 m.

The stagnation of metal detectors in the house is still old, long ago, and the great growth of their production fell on the end of the 60s. Zavdyaki progress and impersonal schemes, be it a radioamator-cob, you can make a metal shukach with your own hands, without going into great knowledge in electronics. Golovna Perevaga self-reliant metal slugs- Small windows.

Quite the simplest metal-shukach, which works on two frequency generators - a metal-shukach for a beat. At the same frequency of the synchronization generator, but when one of the metal coils gets into the field, the frequency change in one of the generators is observed. As a result, the circuit generates the dynamics of the sound of the difference in the frequencies of the two generators.

Tools and materials for building

In order to build a self-contained metal shark, it is necessary to divide the process into three stages - the construction of a structure, the implementation of a scheme, and the folding into a single whole. We will describe an approximate list of tools and materials, which may be needed for this. Further on, after the article, the report will be explained more: why it is possible to choose metal shuck for gold, and what kind of material is better than vicorist. Let's start with the preparation of the tool for diggers-cobs. For robots you need:

1. Pieces for robots with wires and details;
2. Nizh;
3. Saw for plastic. On the extreme slope, you can speed up with a knife, or with a great saw;
4. soldering iron;
5. A set of twists.

Required materials:

1. Isolation line;
2. Dial for soldering. You can vikoristovuvat just rosin and solder;
3. Glue;
4. Details and circuit board;
5. Provid for the cat;
6. Shmatok plastic that plastic pipe;
7. Skriplyuvaly virobi.

Preparation of details

Here is described the report instruction about the choice and search for details.

The back needs to be specified with the material and fasteners warehouse parts metal shukach and know the necessary components.

Like a rod, you can beat a policeman with an armrest, a pipe, a pipe made of sewn polyethylene or polyvinyl chloride (small 2).

Coils that scheme are placed at the bottom on the supports, attached to the bar. So it's important to consider the hardness of the bar and material. It’s better to give credit to dielectrics, tobto. not to carry out electric strum- plastic, wood, etc. It is necessary to work a handle, so that it will be comfortable to trim the metal shukach, which is being prepared. You don’t need it with the militia, but in another weather you can attach it like a kermo like a bicycle, and another self-made design.

The base for the circuit and the coil can be made from high quality plastic. Yogo is easy to cut, and it is of little importance. I need one bottom sheet, I will add the necessary access to the coils for adjustment. To change the vibration of the circuit with coils, it is necessary to choose a better plastic.

After the preparation of the bar and the support, it is necessary to have it. It is possible to speed up with crepe virobs, but don’t forget the varto, so for the correct work of the scheme, don’t varto bring the metal vanes closer, lower by 30 cm. It is possible to win and other materials - to lay everything according to your needs at the plumbing and carpentry robots.

Provid for coils may be insulated. Pіdіyde enamelirovany midny provіd with a diameter of 0.5 - 0.7 mm brand PEV or PEL. Dovzhina drotu is close to 100 meters. Lacquer for fixing parts pidide oily.

Installation of parts can be done in a hanging way on textolite or cardboard. For radioamatorіv-pochatkіvtsіv in specialized stores you can buy a piece of textolіt from the factory or material with openings for parts. It is also possible to pay the fee yourself from a solid unbroken textolite. For which it is necessary to mark the placement of the contacts of the radio components on the diagram, then divide the wooden boards with a knife and vikonat zaludzhuvanna maidanchikiv and roads (Fig. 3). Zayvu part of the textolіtu is cut with a file for plastic.

For the storage of a working metal speaker, radio components can be found at home at the old radio equipment, but you can also come near the store. However, the details may be almost identical to those of the same batch. Table 1 has a list of necessary details and comments, which were brought to the folding of the yoke metal shredder.

If you know all the necessary details, you can easily pick up metal shuckers from home minds.

I will add storage

Having reviewed the list of necessary materials and details, it is necessary to make a report as to how to choose a metal shredder from them with your own hands.

For winding coils of vicorist it is possible to be a round object with a diameter of 20 - 25 cm. The number of turns is 30. We bring out one end of the dart and wind 10 turns, after which, without opening, we bring out another end. We continue winding 20 more turns and we will see the third end. The windings of the dart are robbed from a margin of 10 to 20 cm. We take the winding off the object and it is tightly wrapped with electrical tape, blocking three views of the dart (Fig. 5).

Another cat is beaten in a similar way. For the greatest success, the coils are as close as possible to the same, from mirror-like fermentations.

We proceed to the selection of radio components. We install the details on the board and install the soldering together with the scheme for the little one 4. When choosing cardboard or material with openings, we work the parts with insulated wires with some kind of peretina. When choosing the prepared textolite, soldering is done to the finished tracks. The scheme can be placed in a wooden or plastic box.

Solder the visnovka coils, zgіdno zі scheme. Solder and probably two darts with a socket for the battery.

We are ready to provide a support for the circuit and the coil. Let's try to understand that between the coils you can be at least 10 cm, to that between them the circuit is to blame and the bar is attached.

In order to properly close the coils, timely put the headphones up to the diagram and insert the battery. With small transfers of the cat, it is possible to reach silence in the headphones with single clatters, or as high as possible, ice sweet sound. We are trying to bring the metal up to one coil, as we can feel significant changes, so we should not talk about the practicality of the metal-shukach. It is fixed in this position of the coil and the fee. When possible, it’s better to glue it on the top, and then cover it with varnish.

For earmuffs, it is possible to open two doors at the pants - from the bottom to the beast. For the help of a wire cutter, electrical tape and a soldering iron, we build up the earphones to the necessary length - from the circuit to the area of ​​\u200b\u200bthe people. Odrazu needs a vrahuvati growth. It is easy to wire the middle rod and solder to the circuit.

We cut the excess support and attach the barbell to it in a way that is convenient for you.

regulation

The more precise nalashtuvannya is the presence of a clatter on the headphones, and the presence of an ice of a pleasant high-frequency squeak.

There are three ways to regulate the trio:

1. It was possible to metal it through the eyes to the coils. On that kotush, where the noise stumbled, we could see the remaining coil in the middle of the coil of the kotush.
2. You can beat small pieces of aluminum. It is possible to bring them to the cats and reach the silence, or alone clatter. Fasten with glue.
3. We fasten the tube on the coil and push the ferite haircut through it. Having reached the desired result, close the haircut in such a position. Take a look at the video below, on which it was demonstrated how to work self-restrained regulator for nalashtuvannya in this way.

With a good ear, that knowledge can be used to prepare a metal detector as a simple metal detector from discrimination, to recognize the types of metal.

Modernization

As soon as the simplest metal-shocker was built with their own hands, you can proceed to a small modernization without microcircuits for a small one 9. Transferring the details of the selections from table 2.

AT new scheme added RC-circuit, which consists of a resistor and a capacitor. Vіn allow the reach of increased sensitivity.

Add change resistors to regulate the circuit without soldering coils. Tse allow me to seal the sensitive block of the metal-shukacha at the mіtsnu box, which protects from blows.

Instead of headphones, you can switch the speaker with a capacitor for a small increase in loudness.

In this scheme, the coils are placed one on one, as shown in the little 10. Before fixing the coil, it is possible to regulate their movements.

When enabled, change the resistors in the same position and wrapping to achieve the exact setting. If you don't have enough, take a metal detector and blame the nuggets of metal nuggets. Practically rewritten - like a shukkat, whether it be a Russian beach, you can know gold and silver.

The dream of knowing the belongings is more and more often replaced in our time by a more realistic program for the search for expensive metals from a natural piece of medium.

For modern minds, it’s important to know draw valuable materials sho opinilis mid-day, or in another uncontrolled medium.

Equipment is an important component of the technology of such a search.

The search for the extraction of gold and valuable metals from the inputs, mind, in the natural environment is part of the recycling strategy, the technology for the efficient processing of vicorous materials, among them.

Busy with their search for the earth and the masses of industrial and other inputs, as a way to help stop the equipment, and stimulate it to the fullest. Created attach different equals and specializations. There is interest in such equipment for amateurs and enthusiasts in search of precious metals.

Metal shukach is the most important hand tool for metal hunting in a chaotic natural piece medium.

For the help of such an accessory, you can not only buy, but also silver, and other expensive metal.

I will build the principle be some kind of metal joker bases on electromagnetic effects.

Axis yak pratsyuє typical technology for the sake of metal:

1. Attachment create an electromagnetic field.
2. Metalevy object, sweat roztashovaniya in a foreign middle, pouring into such a field, if sip yoga sphere.
3. Attachment catching the infusion of the object on the electromagnetic field that signaling about.

Most of the metal-shocking models are based on this principle.

The technical specifications of such equipment allow you to take more new information the fact of the manifestation of a metal object, for example:

• evaluate the mass of knowledge;
• take data about the form, understand the configuration of the object;
• specify the place of roztashuvannya, zokrema - according to clay.

Merezhі has anonymous information about metal shucks of various folding and construction. There you can refresh the memory of the theory of the electromagnetic field, which is learned at school.

Simplest, primitive metal shukaki (calculate self-contained designs for gold search, srіbla and other metals of enthusiasts-amateurs) pick up from ready-made outbuildings that virobiv, scho pratsyyuyut z vikoristannyam elektromagnetnyh efektiv.

Someone who knows the primitive, but generally practical scheme of a metal scammer, in which electromagnetic field creates an impulse element of a splendid calculator.

reaction fields that are created on the revealed metal objects catch the simplest butovy radio receiver. The signal about such a knowledge is audible, to communicate the virazy and the mind.

More folding amateur and professional attachments for the search for metal save the logical basis of technology looking three components:

• electromagnetic field generator;
• field change sensor;
• equipment for assessing the detected anomalies that signal about the

Outbuildings of different levels of folding and functional potential can be mentally divided into groups. Classification based on professionalism that specialization of koristuvachiv is one of the most profound:

• amateur equipment, selected with a hand-held vikoristovuvan as a hobby tool or as a beginner at the right place for metal;
• napіvprofesіyna equipment, necessary for hoarding lovers and fanatics;
• professional metal shuckers for permanently working in this sphere;
• special equipment for the minestry to search for metal in folding minds - on the deep, under the water, with the sight of expensive metals.

Expansion of equipment for the sake of such, that a rich attachment of this type can be found in stores for gardening and dacha equipment.

An apparatus for searching for and detecting metal is needed not only for recycling, but for searching for artifacts and belongings. Numerical security systems, all vіdomі frames – one of the version of the technology look for metal. Nashtuvannya tsikh frames orientated to searches for the removal of similar unsafe objects.

Cotushka

Duzhe respectful vuzol hardware for metal searches – cat abo frame. The most important is the winding of a special configuration, the task of which is to form an electro-magnetic field and to catch a reaction to a metal body that is external to the middle.

For more designs roztashovuyt the cat on a long-term pants- hands for її moving around the search zone.

For amateur making of coils, frames of the most requested types are sold. The easiest way to do this is in the online store.

Lots of amateurs we prepare the frames of the coil independently. Tse to fight for the savings of money, or by acquiring a larger instrument of the author's design.

For whom vikoristovuyutsya hand-me-downs- plastic battens, plywood and winding the backing of the assembly line of the selected winding.

The operator will ask for a joke or a treasure trooper to know the most efficient technique of working with a metal-shukach, vibirayuchi required modes the robots of electronics and the correct manipulation of the cat.

Electronic circuit

The logical element of the metal shukach is an electronic circuit. Won vikonu rich functions:

1. The first task of which component is fielded at the creation of an electromagnetic signal of the required format, which, for help, the cat transforms into the field.
2. Another task of the electronic circuit - analysis of field changes caught by the frame, їhnya obrobka.
3. Third task - giving an information signal to the operator- sound, light, indications of indicators and accessories.

Best of all, as a basis for picking up an electronic circuit independently with knowledge from amateur radio or in electronic technology. Such a master can not only choose a scheme, but also change, improve the design.

Bagato electronic appliances make it simple їхнє folding can vikonati navit newcomer. Removal of attachments will be practical without customization, as if choosing exactly the recommendation of a retailer of such a scheme.

How to build "Pirat" independently?

One of the most popular models of metal shackles, rozrakhovanie on handmade amateur made - Pirat.

I named it, in order to avenge the short data, I will add it to the site of retailers, warmly reflecting the romance of looking for expensive metals.

Axis headlines of this model:

• simplicity I will add that folding;
• low variability of details and materials;
• sufficient working parameters;
• Known for goodness for beginners.

The electronic circuit of this model does not require programming. At "Pirati" vicory available for skin detail the correct scheme is chosen correctly.

Design and principle of operation

The constructive scheme and layout of the Pirat metal shukach is traditional for equipment of this kind. Vaughn with a barbell, on the lower end of which is installed cat, and at the upper part - electronic block with living element.

Roztashuvannya electronic block you can leave the space for the manual lifting of the barbell with your hand.

Deyakі maistri vvazhayut for better, so that the sound signal of the device was given not by the speaker, but by the headphones. At this time, the electronic unit has a headphone cable.

The technology of the robotic apparatus is impulsive. Tse allow you to be safer for such a class of equipment showing sensitivity. Below is a diagram of an electronic block on microcircuits.

A similar circuit can be chosen by replacing transistors with microcircuits. This version can be used dodatkovyh nalashtuvan, available only to inform radio masters. To that very fact, the transistor circuit is victorious more.

Materials, details and preparations

Crimea reportedly and accurately indicated on principle diagram electronic block parts, for picking metal detector for gold and other metals it is necessary to prepare some materials and prepared:

• the board is ready for folding the electronic circuit or foil material for it independent preparation;
• dzherelo zhivlennya at viglyadі be-such a combination of accumulators or batteries with a total voltage of 12V;
• enamel wire with 0.5 - 0.6 mm thread for making the spool;
• rich copper wire for z'ednan with peretina not less than 0.75 sq. mm;
• housing for the electronic unit - plastic container with a wide range of dimensions;
• dosit mіtsna plastic pipe for rods;
• frame for winding the coil;
• stained glass materials - solder, thermal cambric, insulating tape, self-tapping screws, adhesives and sealants.

A fee for folding an electronic circuit is better than working for a wide variety of products presented on the Internet.

Below views one of these sights, accessory for the selection of electronics on microcircuits.

Fans of self-made electronics are engaged in the preparation of payments, but not all of them. Most of the bazhayuchih create metal shukach independently volіyut buy such a detail.

For picking up a cat you need a frame or a frame, so as not to avenge the metal elements. A self-made master can make such a frame from plywood, plastic, or choose similar parameters from ready-made plastic molds, for example, dishes. The frame can be attached to the finished one, or it can be cut independently

Recommended parameters of the coil- 25 turns of enamel wire with a diameter of 0.5 mm on a mandrel with a diameter of 190-200 mm. The increase in diameter by 30% will lead to an increase in the sensitivity of the device for the mind, so the number of turns will be changed to 20-21.

The plastic frame for the cat is one of the most widely sold parts of the metal shackles.

The technology of manipulating the cat is such that even a German vuzol can suffer from blows about the unevenness of the earth, stone, hospital objects. Shchob cover the coil on the frame with a plastic plate. Such a plate not only protects the cat, but also secures the mode of forging with tall grass. Poshuk becomes intense.

Order of selection and design

For the successful selection of a metal scammer best to dorimuvatisya this order diy:

• preparation of a hand-held payment and the folding of an electronic circuit;
• vybіr vіdpovіdnoї for razmіrom plastmasovoї єmnostі for her that completed folding of the electronic block;
• preparation of the cat;
• the preparation of a hand-shaped rod and a coil attached to it on the electronic block, vikonannnya zadnanny electronic circuit.

Wanting a principled character, the order of selection is not possible. For those who are preparing a device for continuous work in the field of color metals and low recycling (recycling for recycling), an important factor is the quality of the coring.

In which way the shape of the rod is used, the arrangement of the main elements of the apparatus becomes a key factor. In this way, a serious design phase is established in the device.

The best way to win this stage of work for help life size model. Such a model can be made from different wooden parts of a similar shape, for example:

• petiole for shovel;
• plywood pieces of the required form;
• obrіzkіv s;
• timchasovogo korplennya zі shmatkіv drot, tsvyakhіv and motuzok.

Having changed, that the model of the device will be assembled functionally and handy, you can proceed to the final folding. Ready machine, as a rule, don't care about fixing vin povnistyu ready to work. It is possible to start looking for metal, choosing the necessary level of sensitivity and the correct tactics of manipulating the cat.

Warehouses, as it is necessary for you to pick up your equipment, can be fastened with ready-made sets of parts.

Purchasing such a set allows you to easily prepare "Pirate". One of the propositions є.

Coristuvachi metaloshukach "Pirat", like mayut newbies in the radio amateur's right, modify the design of this apparatus. Axis only straight sprat such perfect:

1. preparation coils with invariable parameters- for rozmіram, from special materials, for example - a cable of the "twisted pair" type.
2. Vlastuvannya dodatkovyh functional systems, for example, indication of the battery discharge level.
3. preparation models for underwater robots.
4. Additional electronic circuit, what is allowed to separate metal(The creation of the function of discrimination).

A simple, inexpensive and nadіyny metal jukebox "Pirat" is rightly practiced in different minds.

Self-closing metal detector - pros and cons

Cheapness, base gain independent preparation, whether it be virobiv, is relevant for metal shukach. Axis yaki sche є advances at self-propelled apparatus:

• the most reliable search technology for beginners;
• feasibility of creating an apparatus with an individual form, design and configuration;
• Satisfaction with independent preparation of an effective, practical accessory.

Like and be-like attachment, prepared by an amateur rank, metal shukach no concessions for some short-lived.

The axis of the peculiarities of the "Pirate" model is indicated by the corystuvachs:

• energy saving charge accumulators of life;
• day of discrimination for precise sensitivity to black, colored and expensive metals;
• fenced in pairs with expensive models sensitivity.

Regardless of the shortcomings, the Pirate model is already popular. This is explained by the simplicity of self-reliant preparation and the high performance of an inexpensive device.

It is important to take into account the recycling of fahivtsy, that the possibility of discrimination of metal shukach cannot be of great importance. All the known ones threw the floorings of the zinc, that the reworking of the factory was true. Orientation to the search for gold means not only equipment, but also a little dosvіdu, satellite know and obviously hi be happy.

Video on the topic

The video has report aid from the preparation of the collection of metal shukach "Pirat" with your own hands:

Visnovok

If the metal-shukach is ready, you can start the robot. It is necessary to be aware that the most advanced apparatus is not allowed to know only gold objects.

Metaloshukach will help you to know the precious metal, and it’s safe to say that it will be gold. The best, like a possible scammer of metals and gold, is a real statement about the technology of scamming.

A lot of features of the operation of the finished equipment are even more important for those who develop and choose their own models. It is necessary for the mother to be informed about the technology of robotics with such equipment - the basis of її yakіsnogo design.

The effectiveness of the search for gold will increase with proof. Axis most important elements such dosvіdu:

• the correct choice of construction of a metal-shukacha and yogo yakіsne made by one's own hands;
• buildings the right choice maidanchiki poshuk;
• vminnya vikoristati potential metaloshukacha povnistyu;
• choose the right technology to ask for different minds;
• modernization of metal shukach.

Correctly selected that nalagodzhena zavzhdzhen equipment to help you search for gold, and all the valuable metal of the shoe is found.

In contact with

Building clay metal detectors to detect objects in the ground great vision. Modern modifications at stores are costly to finish. However, to this particular type you can try to make a metal detector with your own hands. For this reason, we recommend that you familiarize yourself with the design of the standard modification.

Scheme of modification

Choosing a metal detector with your own hands (the diagram is shown below), follow the memory that I will add a damper on the microcontroller as the main elements, a capacitor and a handle with a trimmer. The control unit for outbuildings is composed of a set of resistors. Actual modifications are made on drive modulators, which are carried out at a frequency of 35 Hz. Without the middle of the vikonan stalk with narrow and wide plates of a dish-shaped form.

Instructions for choosing a simple model

It's easy to pick up a metal detector with your own hands. It is recommended that you prepare a pipe and attach a handle to it. To install, you need high-conductivity resistors. I will add a working frequency to deposit due to rich factors. If you look at modifications on diode capacitors, then the stench may be highly sensitive.

The operating frequency of such metal noisers should be close to 30 Hz. The maximum visualization of an object is 25 mm. Pratsyuvat modifications of buildings on batteries of lithium type. Microcontrollers for selection will be required with a polar filter. A lot of models are stacked on open-type sensors. It is also important to note that experts do not recommend victorious filtering of high sensitivity. The stench also reduces the accuracy of the detection of metal objects.

Model series "Pirate"

It is possible to build a metal detector "Pirat" with your own hands only on the basis of a wired controller. A microprocessor is being prepared for selection. A lot of experts recommend to install grid capacitors with a capacity of 5 pF. Their conductivity can be increased on the level of 45 microns. After that, you can proceed before soldering the control unit. Stіyka can buti mіtsnoy i vitrimuvati vag plate. For 4 V models, it is not recommended to stop the plates with a diameter of over 5.5 cm. The system indicators cannot be installed automatically. If the block is fixed, it will be too much to install batteries.

Vykoristannya reflex transistors

It is easy to kill a metal detector with reflector transistors with your own hands. We recommend experts to take up the installation of a microcontroller. Capacitors at times are of a three-channel type, and the conductivity of the stink is to be changed to 55 microns. With a voltage of 5 stinks, the support is approximately 35 ohms. Resistors in modifications are more important than the contact type. The stench mayut negative polarity and cope well with electromagnet coliving. It is also important to indicate that, when folded, it is allowed to twist the maximum width of the plate for such a modification is 5.5 cm.

Model of convection transistors: tips on fahivtsiv

You can choose a metal detector with your own hands only on the basis of a collector controller. With this, the capacitors freeze for 30 microns. As a matter of fact, to the advice of experts, it’s better not to zastosovuvat tight resistors. In this case, the maximum capacity of the elements can be 40 pF. After the installation of the varto controller, the block of care will be taken care of.

Dani metalshukachi otrimuyut good advice behind nadiy zahist vіd khvilovyh pereshkod. For this reason, two filters of the diode type are used. Modifications with display systems are rarely used among self-contained modifications. Also varto designate that the blocks of life are to blame for the low voltage. In this rank, the battery will last a long time.

Variant of chromatic resistors

With your own hands? It is easy to make a model with chromatic resistors, but you should also check that the capacitors for modifications are allowed to stop more on the outside. Also, experts point out the inconsistency of resistors from passing filters. Before picking the cob, it is important to prepare a tube for the model, as if it were a handle. Let's install the block. Docіlnіshe choose modifications to 4 microns, yakі work at a frequency of 50 Hz. They have a small coefficient of dispersion and a high accuracy of the world. So varto signify that the fools of the class can successfully work in the minds of the promoted voice.

Model with a pulsed stabilitron: folding, winding

Attachments with pulsed zener diodes are seen as high conductivity. If you believe in the opinions of specialists, then self-modification of buildings is practiced with objects of various sizes. If we talk about parameters, then the accuracy of the stink detection is about 89%. I’ll start folding the varto from the prepared rack. Let's install the handle for the model.

With the coming crock, the keruvannya block is installed. Let's install a controller, which works in the form of lithium batteries. After installing the unit, you can start soldering the capacitors. Their negative opir is not guilty of overshooting 45 ohms. Expert opinions point to those that are modified this type can be prepared without filters. Prote varto vrakhovuvati, scho model matime sereznі problems z khvilyovym shifts. With what is the capacitor suffering. As a result, the battery of models of this type is quickly discharged.

Zastosuvannya low-frequency transiver

Low-frequency transceivers in models significantly reduce the accuracy of robotic devices. However, varto indicates that modifications to the type of building can be successfully processed with objects of small size. With this stench, the self-discharge parameter is small. In order to pick up the modification with your own hands, it is recommended to use a qualified controller. The transmitter is most often played on diodes. In this way, the conductivity is safe at a value of 45 microns with a sensitivity of 3 mV.

Deyakі eksperti recommend installing sіtkovі filtri, scho pіdvishchuyut protection models. To increase the conductivity, only transitional type modules are used. The main shortcomings of such outbuildings are the burnout of the controller. For such a breakdown, it is problematic to repair the metal detector with your own hands.

High-frequency transceiver switch

On high-frequency transceivers, you can choose a simple metal detector with your own hands only on the basis of a transitional controller. Before the cob of installation, a stand under the plate is standardly prepared. The conductivity of the controller at the average door is 40 microns. A lot of fahіvtsіv do not vikoristovuyut every hour of choosing contact filters. The stench can absorb high heat, and the stink can be produced at a frequency of 50 Hz. Also, it is important to indicate that for folding the metal-shukach, lithium batteries are used to charge the control unit. Without a middle modification sensor is installed through a capacitor, for which the capacity is not guilty of overshooting 4 pF.

Model with late resonator

The market is often equipped with extensions from later resonators. The stench is seen among its competitors with a high degree of precision in the design of objects, and under which they can work for increased moisture. In order to independently select a model, a rack is prepared, and a plate of varto should be placed with a diameter of at least 300 mm.

Also, you need to designate that for picking I will add a contact controller, and one expander. Filters vikoristovuyutsya less on the grid lining. It is recommended to recommend the installation of diode capacitors, which work at a voltage of 14 V. Before the stench, it is not enough to discharge the battery. Also varto indicates that stench may have good conductivity in pairs with sex analogues.

Selection of selective filters

It is not easy to make such a deep metal detector with your own hands. The main problem lies in the fact that it is not possible to install a super capacitor. Also, the varto indicates that the plate for modification is selected with a diameter of 25 cm. A lot of experts to work out the layout of the installation of the control unit. Vin is guilty of praccyuvati at a frequency of three more than 50 Hz. At the same time, it is possible to lie in the form of a controller, which wins over the owner.

To finish often yoga is picked up with a lining to increase the protection of modifications. However, such models are often overheated and cannot be worked out with high accuracy. To overcome this problem, it is recommended to use alternative adapters, as the sub-blocks of the capacitor are installed. Do-it-yourself coil for a metal detector is made from the transiver unit.

Contamination of contactors

The contactors at the extension are installed at once from the control units. The racks for modifications are vicorous with a small length, and the plates are set at 20 and 30 cm. With this, the capacitors can be beaten with a low capacitance.

Also, the varto indicates that after the installation of the varto control unit, solder the filter, which is a building work at a voltage of 15 V. In this case, the model has a conductivity on the level of 13 microns. Transiveries are most often vikoristovuyutsya on adapters. Before turning on the metal shukach, the negative support is checked on the contactor. The value of the parameter for the average door is 45 ohms.

We tried to figure out the scheme of the metal scam and try to work our experimental apparatus to get to know the principle of the robot to break through the power, but don’t know why? Let's take a look at once, even if creating simple electronic circuits, including metal-shukachi with your own hands is not so important.

metal detector allows you to know the objects that can sing electric and electromagnetic powers, which irritate them dovkilla. Before such objects lie, for example, various earths were thrown. Metal-shukachi vikoristovuyutsya services to look around, military, geologists, alarmists and fahivtsy low іnshih professions for znakhodzhennya metal in the soil and not only.

At the same time, metal slugs are often used by famous people for the search for metal wares of black metallurgy and the importance of colored metals, which make up different coins, jewelry, embellish and embellish the merchandise: sleeves, tokens and richly other. Also, a metal detector can help in case of a search for ruined or negligent objects, as life is necessary, or may have material and moral value (parts of mechanisms, keys, rings, embellish thinly).

Sensitivity of the fitting is to lie down according to the diameter of the dust coil. The larger її diameter (30 cm in diameter), the less sensitive to small objects, but to the great, earthy zalyagannya. First of all, the smaller the diameter, the faster the reaction of the larger small objects. In promissory words є reporting instructions about sensibility and zastosuvannya of small cats.

In a self-contained annex, the fallowing of yogo sensitivity in view of the diameter of the cat is also taken care of. Ale needs to be remembered, that a self-contained tool behind its own characteristics will be a distant view of professional possession through the various nuances of physical processes that are experienced. In one phrase, the principle of robotic metal shukacha can be described as follows - the cat emits electromagnetic winds and immediately reacts to induction induction in the metal jet, which generates its magnetic field under the coil winding.

In fact, the physical processes are richly folded, and the very search for belongings in professional possessions (with vibration and separation) is far from being as simple as it can be, and the wealth of smіttya in the ground can be used to dig, if the yakіsny attachment squeaks a hole. Therefore, the guidance of the lower attachments cannot guarantee happy knowledge of the neimover treasures, but it can help, on the basis of your own knowledge, to understand the very principle of mutual interaction between metal and the metal-shukov’s cat.

The creation of an attachment of this type does not become great difficulties, it is necessary to learn less about the schemes and use a soldering iron. In this vipadka will be described simple circuit with the most common head rank 555 microcircuits (universal timer).

For familiarization with the operation of such a timer, it is recommended to read the relevant manual from the parameters of this microcircuit (datasheet).

Required materials and tools:

1. 555 microcircuit (universal timer);
2. 2 capacitors of 2.2 uF;
3. resistor = 47 kΩ;
4. batteries=9, wire for power supply, battery cable, jumper;
5. circuit board;
6. midny drіt \u003d 100 m (d \u003d 0.2 mm);
7. a buzzer for giving sound signals (it can be replaced by a speaker with a support = 8 ohms and a capacitor = 10 microfarads);
8. rustic glue and electrical tape;
9. cardboard;
10. pliers, for the help of which you can open an opening, tweezers;
11. solder at the sight of a dart and a soldering iron;
12. line, hostry lower, compasses, olive;
13. glue for hot gluing;
14. screw that breadboard.

Scheme of metal shukach

To your respect, different self-proclaimed metal scammers can crawl. The stench is known to the free access, it is not enough to introduce “metal-shock schemes” into the row of jokes. Dana was taken by the same rank from the Internet, and before her reports, the buzzer was replaced by a speaker and a switch (for a battery).

Cot preparation

For the clarity of the calculation, you can use the online calculator for the lost cat. With this help, you can unravel that for a cat with a diameter of 9 cm, 250 turns (turns) of lacquered copper dart d = 0.2 mm are required. The coil inductance of the coil is approximately 10 MH.

The smaller її d (diameter), the more turns you need (for a coil with a diameter of 7 cm, 290 turns are needed).

Buy ready not in stock difficult. If you all the same vyrishili pick її with your own hands, then before it, like soldering two pieces of darts, it is necessary to clean them with emery paper. It is necessary to make all the work carefully, so as to make it impossible to pour in a non-acoustic installation on a self-contained attachment, which will react to an impersonal change.

Testing of the cat and the folding of the hand-made pay

In order not to charge a working fee, rather than a scheme to protest on a breadboard.

Coming soon, you will need to build a circuit board. If you don’t mind, it’s better to know the description on the Internet with video lessons.

testuvannya

Basis for construction

The basis for your simple metal shukach can be vikonan with whatever materials are handy for you (wood, plastic, etc.). At the same time, cardboard served as the basis. Vіn is more simple for vikoristannі.

It is necessary to create a sketch of the handle (3 details) on the back, navit without calculation. Your hands will be responsible for a battery, a board, a switch and a cat.

Let's open the batteries for switching. Glue parts on cardboard with vicorous wood glue and leave to dry overnight (approximately 12 years).

After hanging the glue, it is necessary to viconate in the hands, entrusting it with a switch from the opening for free passage through the new dart. І nareshti glued to the cardboard handle a coil, vicorist hot glue.

Folding parts and stacking

If all parts of the vikonan are okremo, only a few of them are left behind. It is necessary to glue the back of the back with additional hot-melt adhesive to the handle, insert the battery and glue the circuit board.

Now the hour has come to connect all the components between you and to protest your creations. It will not be easy for a newcomer to get into the same accomplice, but if you don’t take on the preparation of a metal junk, then you’ll quickly pick it up.

Such a choice of metal shukach to douse for the purpose of finding other objects in a nearby place and in the middle of the place, in order to avoid problems. And then there’s the memory that the self-confidence is given to act strongly for sensitivity, sharpness of manifestation, separation and vibrancy, steadfastness to the point of overshooting the industrial possession, and repeat її varto shvidsche for the sake of sports interest and awareness of the principle of metalwork.

What wiishlo in the bag:

SHORT METAL JUKACH

Why does the Volksturm itself have the best metal jukebox names? Golovne - the scheme is really simple and really working. From the rich schemes of metal shuffles, as I am especially timid, everything here is simple, profound and hopeful! Tim is bigger, with its simplicity, in the metal detector there is a good discrimination scheme - the hall is distinguished or the color metal is found in the ground. The folding of the metal horn goes into the bezpomilkovy pair, and the coils are adjusted to resonance and to zero at the output of the input stage on the LF353. There is nothing super-folding here, it would be bazhannya that brain. We are more constructive vikonannya metaloshukacha that new thorough scheme Volksturm іz description.

Oskіlki pіd hіd skladannya vinikayut nіkayutnі, schob zaschazhit yоur hour і not zmushuvati gorytaty storіk storіk forum, vіdpovidіdі vіdpoіdі іn 10 most popular іnіtа. The article is in the process of being written, so that the deak points will be updated later.

1. The principle of robotics and the manifestation of the purpose of the metal shark?
2. How to reverse Chi pratsyuє board metaloshukacha?
3. What is the vibrati resonance?
4. What are the shortest capacitors?
5. How to set the resonance?
6. How to set the cats to zero?
7. What is the shortest cable wire?
8. What details can you replace?
9. Why should clay be deposited for the sake of purpose?
10. Volksturm live metal junk?

The principle of the robotic metal jockey Volksturm

I will try two words about the principle of work: transmission, reception and balance of induction. 2 coils are installed at the pick-up sensor of the metal-shukach - the transmitter and the receiver. The presence of metal changes the inductive link between them (including the phase), which is added to the signal, which is then processed by the indication block. Between the first and the other microcircuit, there is a switcher for switching by pulses of a generator that is broken in phase along the transmitting channel (if it is transmitting, it is possible to receive switching on and off, and also to receive switching on, transmitting it, and receiving a calm signal in the transmitting channel). Otzhe, you turned on the metal horn and squeaked wine. Vіdminno, like squeaking - means richly vuzlіv pratsyyut. Let's figure out why we should squeak. The generator on U6B constantly generates a tone signal. Dali vіn go to the switch on two transistors, ale unch do not sound (do not miss the tone), until the voltage on the output u2B (7th visnovok) does not allow you to go. This voltage is set to change the regime for the help of the trash resistor itself. You need to install such a voltage, so that the unch may be broken and skipping the signal from the generator. І input pari mіlіvolt from the coil of the metal shukacha through the subsiluval cascades; Now it's easy to pass the signal, more precisely, the signal to the sound. On the first stage (1-y1a) there will be a few millivolts, up to 50 can be. Ale without a sound, scratch on the outputs with zeros.

How to reverse chi work

The key (CD 4066) is turned on with a finger to the RX input contact with the maximum support of the sensor and the maximum background on the dynamics. If you change the background, when you press your finger for a second, then the key and the operators will work, they will connect the RX coils with the capacitor to the circuit in parallel, the capacitor on the TX coil in series, put one coil on the other side and start to turn to 0 after the minimum indication of the second stream on the first stream. We took a large and cold air and reverified it in the dynamics of the reaction to metal. We check the voltage on u2B (7th winding) is the fault of the trash regulator, change + - a couple of volts. Yakscho nі - a problem in this cascade of OS. For the cob of the re-checking, pay for the cots and for the life.

1. The sound is to be heard when the sens control is set to the maximum opir, sticking a finger on the RH - as a reaction, all the operators work, as well as not - it is checked with a finger, starting with u2 and minifying (obstructing the binding) of a non-working op-amp.

2. The operation of the generator is checked by the program frequency. Headphone plug soldered up to 12 to CD4013 (561ТМ2) sound card do not sleep). The sound board has In-lane. We look at the frequency of generation, її stability at 8192 Hz. If it is strongly displaced, then you need to remove the capacitor c9, because even then it is not clearly seen and a lot of frequency splashes are replaced by quartz.

3. We re-verified the subsidiaries and the generator. Everything is in order, but everything doesn't work - I change the key (CD 4066).

What resonance vibrati coil

When the coil is connected to the last resonance, the strum at the coil increases and the circuit is heated. There is more room for the manifestation of the mark, but there are only a few on the table. On a real soil, the earth will feel stronger, the more pumping in the hutch. More shortly, the inclusion of a parallel resonance, but slightly sensitive to the input cascades. That th battery must be pulled out more richly. Irrespective of those that the last resonance zastosovuetsya in all expensive branded metal detectors, Sturm needs the very parallel one. In imported, expensive fittings, the schematics of the weather and the appearance of the earth are good, so in these fittings, the latter can be allowed.

For capacitors, it is better to install a circuit metal joker

The type of capacitor that is connected to the coil has nothing to do with it, but they experimentally changed two and worked out that with one of them the resonance is shorter, then just one with nibito 0.1 uF really can be 0.098 uF, and the other 0.11. Axis and difference between them go out for resonance. I voted for Radian K73-17 and green imported pillows.

Yak nalashtuvati resonance coil metal joker

Cat, yak himself short version, Get out of the plaster floats glued with epoxy resin from the ends to the size you need. Moreover, the central її part of the zі shmatkom handles and the grater itself, as it is processed to one wide ear. On the pants, navpaki, a fork with two eyelets is fastened. This solution allows you to solve the problem of coil deformation when tightening the plastic bolt. The grooves for the windings should be robbed with a special vip, then zero setting and filling. In the cold end of the TX, it is too much 50 cm. better on the street, rozmіshchuchi kotsu bіla zemlі (like when poshuku) when GEB is turned on, like vin є, then residually fill with resin. Todi vіdbudova vіd zemlі, pratsyuє more-less sternly (vynyatok strongly mineralization soil). Such a cat comes out light, soft, a little slender to thermal deformation, but trimmed and poached is already pretty. And one more thing to watch out for: as a metal shock pick-up from the water to the ground (GEB) and with the central winding of the resistor moving the resistor, set zero even with a small washer, the range of regulation of GEBA + is 80-100 mV. How to set zero with a great object - a coin of 10-50 kopecks. the range of regulation is increased to + -500-600 mV. Do not marry for the voltage in the process of adjusting the resonance - I have close to 40V at 12V at the last resonance. In order to discriminate, the capacitors in the coils are switched on in parallel (after switching on is necessary only at the stage of selection of capacitors for resonance) - on dark metal there will be a drawn out sound, in colors - a small one.

But it's easier. Connect the coils on the card to the transmission TX output. Alashtovuєmo in resonance one, and tuning її - іnsu. Pokrokovo: They connected it, in parallel the coils ticked with a multimeter between the changeable volts, so in parallel the coils soldered a capacitor of 0.07-0.08 microfarads, marveling at the indication. Permissible 4 V - even weakly, not in resonance with frequency. They poked in parallel with the first capacitor another small capacitance - 0.01 microfarads (0.07 + 0.01 = 0.08). We marveled - already showing the voltmeter 7 V. Good, more capacity, turn on 0.02 microfarads - we marvel at the voltmeter, and there 20 V. Chudovo, demo far away - we still got a couple of thousand peaks of capacity. Yeah. Already began to fall, vіdkotimo back. And so reach the maximum readings of the voltmeter on the coil of the metal shukach. Potim similarly with the other (adoptive) cat. Build a maximum and connect back to the primal nest.

How to bring the metal-shukacha's cats to zero

To adjust the zero, we connect the LF353 tester to the first leg, and we can start to squeeze and stretch the cat. After the inflows from epoxy - zero for sure in the flow. That is why it is not necessary to fill in the whole coil, but to spare a place for regulation and then bring it to zero and fill in the rest. Take a piece of twine and tie half of the spool with one turn to the middle (to the central part, the place for tying two spools) insert a piece of stick into the loop of the twine after which you twist (tighten the twine) - the spool will clench, spymavshi zero twine. renew the zero by turning the stick a little more and pour the twine residually. Or it’s simpler: The transmission is firmly fixed in plastic, and the priymalny is put on the pepper by 1 cm, like a spring ring. On the first display U1A there will be a squeak of 8 kHz - you can control it with a voltmeter of the jet stream, or rather just with headphones. So the axis of the receiving coil of the metal-shukacha needs to be put in, then crushed from the transmission until quiet, until at the exit of the OS the squeak is not outwardly to the minimum (otherwise the voltmeter reading does not fall to a few millivolts). Everything, the cat is zvedena, fixed.

What kind of wire for poshukovy coils is better

The wire for winding the coils is not important. Vіd 0.3 to 0.8 pіde be-yaky, all the same, it's possible to pick up trohi for adjusting the contours at the resonance that at a frequency of 8.192 kHz. Zvichayno and more thin wire goes around, just chim vin tovstishy, ​​tim goodness and, like a little bit - better. Ale, how to wind up 1 mm - you will do it very hard to pull. On the archway paper, there is a small rectangle 15 by 23 cm. From the right upper and lower kuts, we make the same, but we add 3 cm each. In the middle of the lower part we put a dot and at the points left-handed and right-handed on the 1 cm. We take a wire of PEV 0.3 and maybe 80 turns of the wire. Ale honestly seeming all the same skіlki vitkіv. All one frequency of 8 kHz is put into resonance by a capacitor. Skіlki wound - stіlki and wound. I wound 80 turns and a capacitor of 0.1 microfarads, if you wind it is permissible 50 - set the capacitance to 0.13 microfarads here. Dali, not knowing the pattern, wind the coil with a thick thread - like wrapping a bundle of wires. After that, cover the cat with varnish. If it's dry, take the cat from the template. Let's go ahead and wind the coil with insulation - a fum-string or an electrical tape. Next - the winding of the receiving coil with foil, you can take a line from the electric capacitors. TX coil can not be screened. Do not forget to fill in the ROZRIV in the screen 10 mm, in the middle of the coil. Next, winding the foil with a lure dart. This wire will be made at once from the cob contact of the cat with us. І nareshti winding the coil with electrical tape. Coil inductance is close to 3.5 mg. The place to go out is close to 0.1 microfarad. When pouring the cauldron with epoxy, then I did not fill it with fire. Just tightly wrapped with electrical tape. And nothing, two seasons came out of the cim with metal slugs without going out. Give respect to the water-insulation scheme and fluff coils, even if you happen to mow on wet grass. Everything can be hermetically sealed - otherwise you can eat a vologer and fill up the toppings. Sensitivity is lost.

What details can you replace

transistors:
BC546 - 3pcs or KT315.
BC556 - 1pc or KT361
Operatives:

LF353 - 1pc or change to wider TL072.
LM358N - 2pcs
Digital microcircuits:
CD4011 - 1pc
CD4066 - 1pc
CD4013 - 1pc
Resistors, intensity 0.125-0.25 W:
5.6K - 1pc
430K - 1pc
22K - 3pcs
10K - 1pc
390K - 1pc
1K - 2pcs
1.5K - 1pc
100K - 8pcs
220K - 1pc
130K - 2pcs
56K - 1pc
8.2K ​​- 1pc
Change resistors:
100K - 1pc
330K - 1pc
Capacitors are non-polar:
1nF - 1pc
22nF - 3pcs (22000pF = 22nF = 0.022uF)
220nF - 1pc
1uF - 2pcs
47nF - 1pc
10nF - 1pc
Electrical Capacitors:
220uF at 16V - 2pcs

Dynamic miniature.
Quartz resonator at 32,768 Hz.
Two overlays of light with different colors.

How can you not reach imported microcircuits, the axis of domesticity analogues: CD 4066 - K561KT3, CD4013 - 561TM2, CD4011 - 561LA7, LM358N - KR1040UD1. The LF353 microcircuit has no direct analogue, but we can boldly put LM358N or, more briefly, TL072, TL062. Zovsіm not obov'yazkovo put operational assistant itself - LF353, I just increased the power on U1A by replacing the resistor in the lance with a negative zvorotny zv'azku 390 kohm per 1 mOhm - sensitivity significantly increased by 50, though after you change zero, I had a chance to stick an aluminum plate on the coil in the singing area with tape. Radiansky three kopіyka vіdchuvaє vіtrya vіdstanі 25 сіmіtrіvі і tse when alive 6 volts, spodzhanie struma without indication - 10 mA. And don't forget about the panels - clarity and simplicity have been enhanced to move significantly. Transistors KT814, Kt815 - in the transmission part of the metal shukach, KT315 in the ULF. Transistors - 816 and 817 are based on the same power factor. Replacements for whether there are any visible structures and tightness. A special clock quartz at a frequency of 32768 Hz was installed at the generator of the metal horn. Tse standard is absolutely for all quartz resonators, like to stand at any electronic and electromechanical year. In addition, there are wristwatches and cheap Chinese wall / floor. Archives from handed payment for option i for (option with manual winding of the earth).

Vіd what to deposit glybina for the sake of purposes

The larger diameter of the metal shukacha cat, the more glib more sensitively. And vzagali, the depth of the manifestation of the given cat is to lie down in front of us in front of the world itself. In addition to the increase in the diameter of the coil, there will be a change in the accuracy of the detection of the object and to induce other purposes. For objects with a coin, this effect is observed when the size of the cat is larger than 40 cm. The big cat is ideal for the search for deep and great goals, such as treasures and great objects.

According to the shape of the cat, it is divided into round and elliptic (rectangular). An elliptical cat of a metal-shukacha can reduce the vibrancy of a round one, so that the width of the magnetic field in it is smaller and in the field it consumes less third-party objects. Ale is round to the great depths of manifestation, and the beauty of sensitivity to the point. Especially on weakly mineralized soils. The round cat is most often vikoristovuєtsya with a joke with a metal stunner.

Coils with a diameter less than 15 cm are called small, coils with a diameter of 15-30 cm are called medium and coils over 30 cm are called large. A large cat generates more electromagnetic field, so there is more depth of manifestation, the lower one is small. Great cats generate a great electromagnetic field and, apparently, can make a great depth of manifestation that cover when joking. Such kotushki vikoristovuyutsya for revisiting the great areas, but with їх vikoristannі you can blame the problem on the strongly marked maidanchiks to those who in the field of large kotushki can spend a lot of money and metal shukach zeaguє for more meta.

The electromagnetic field of a small poshukovoy cat is also small, so with such a cat it is better to shukat on the territories heavily confounded by all sorts of metal objects. A small cat is ideal for revealing small objects, but it may cover a small area and even a small depth of manifestation.

For universal request good go middle cat. Such a rozmіr poshukovoї kotushki poednіє in my own enough clay poshku and sensitivity to the goals of іznimi razmіry. I robbed a leather coil with a diameter of approximately 16 cm and offended the coils by putting a 15" old monitor at the round base. In this version of the glybin, the following would be the following: aluminum plate 50x70 mm - 60 cm, M5-5 cm nut, coin - 30 cm, wind - close to 100 m.

Lively metal joker

Okremo circuit of a metal shunter with a pull of 15-20 mA, with a connected coil + 30-40 mA, up to 60 mA at a time. Obviously, depending on the type of stagnant speaker and light source, the value may change. The simplest way is to take 3 (or two) sequentially connected lithium ion batteries to the mobile at 3.7V and when charging the discharged batteries, if it is possible to connect a battery to 12-13V, the charge starts to fall to 0.8A 50th year and then it was not necessary to add, if you want an intermediate resistor, obviously, do not start it. Yak vzagali himself the simplest option- Crown at 9V. Ale call, scho metaloshukach z'їst її for 2 years. Ale for nalashtuvannya this option of living itself. Krona, for whatever furnishing, you can’t see the great struma, which can be burned down at the board.

Self-closing metal shukach

And now I have described the process of choosing a metal detector from one of the detectors. Oskіlki z priladіv May only a multimeter, zavantazhiv z іnta virtual lab Zapisnih O.L. Picking up an adapter, a simple generator and running an oscilloscope at idle. First, show me a picture. Dali zaynyavsya radio components. The shards to each other are mainly placed in the “lay” format, having chosen “Sprint-Layout50”. Z'yasuvav, that such a laser-pure technology for the preparation of other boards is such a work. Show the fee. At that time, all microcircuits knew. What I don’t know in my shed, I had a chance to bathe. Starting to solder jumpers, resistors, sockets of microcircuits and quartz from a Chinese alarm clock to the board. Periodically pereveryayuchi opir on the tires of life, so that there was no snot. Virishiv for the cob pick up the digital part, I will attach it like a lighter one. Tobto generator, dilnik and commutator. Zibrav. Having put the generator chip (K561LA7) and dilnik (K561TM2). Used microcircuits, vider from some boards, shown at the shed. Having served a 12V meal with control over the ammeter, 561TM2 became warm. Having replaced 561ТМ2, served food - zero emotions. I measure the voltage on the legs of the generator - on 1 and 2 legs 12V. Minyay 561LA7. I turn it on - at the end of the dilnik, at 13 nos є generation (I watch on a virtual oscilloscope)! The picture is really not narrower than a yak, but beyond the sight of a normal oscilloscope - farther. Ale on 1, 2 and 12 legs doesn’t do anything. Also, the generator is working, you need to change TM2. Having installed the third microcircuit of the dilnik - beauty on all outputs is generation! For myself, having grown whiskers, it is necessary to use microcircuits more carefully! At tsomu the first crochet is broken.

Now we've got a metal-shukacha pay. Having not tried the "SENS" regulator - sensitivity, I had to throw out the capacitor C3 after the second regulation of sensitivity, it worked like a next. Not matching the sound, which is blamed in the extreme left position of the "THRESH" regulator - the threshold, having replaced the resistor R9 with a latch, in series, a 5.6 kOhm resistor + a 47.0 uF capacitor (negative removal of the capacitor from the side of the transistor). While there are no LF353 microcircuits, replace it by putting LM358, with it, three kopecks will be repeated on the 15 centimeter wall.

Poshukov's cat for transmission I mentioned as the last kolovalny contour, but the reception is like a parallel kolyvalny circuit. Having installed the first transmission coil, having switched on the selected sensor design to the metal shukach, the oscilloscope was parallel to the coil and the maximum amplitude was applied to the capacitors. After that, the oscilloscope was connected to the receiving coil and the maximum amplitude was added to the capacitors on the RX. The adjustment of the contours at the resonance is borrowed, for the visibility of the oscilloscope, sprats of fluff. Windings TX and RX I have 100 turns of a wire with a diameter of 0.4. We fix the ring on the table, without the case. It's just that there were two hoops with wires. And in order to perekonatisya in praceszdatnostі and feasibility vіdomostі vzagalі - rozvedi kotushki one vіd one per meter. Todi zero will be exact. Let's put the cots together with an overlap of about 1 cm (like spring hoops) zrushuvati - rozsuvati. A speck of zero can be done accurately and it’s not easy to be evil. Ale won є.

If, I increased my strength in the RX tract of the MD, I began to work slowly at maximum sensitivity, it was in the fact that after passing over the method and її the signal was seen, but I continued to see the cat , tse appeared at the sight of alternating parts and sound signals. For the help of the oscilloscope, the reason for this was revealed: with robotic dynamics and an insignificant drop in the voltage of life, there is "zero" and the MD circuit switches to autocooling mode, it is possible to get out of it only by roughening the threshold sound signal. At the same time, I didn’t influence that, by putting KR142EN5A + over the bright white light bulb to increase the voltage at the output of the integral stabilizer, the stabilizer for more high voltage I did not have. Such a light can be spun for lighting a search coil. The speaker was connected to the stabilizer, MD after it became once more rumored, everything began to work as required. I think the Volksturm is truly the best self-confident metal stunner!

Recently bula was proponated given scheme doopratsyuvannya, scho to allow the transformation of the Volksturm S on the Volksturm SS + GEB. Now the attachment will become a good discriminator, as well as the selectivity of metals and budding soil, the attachment will be soldered on an okremіy board and the replacement of capacitors C5 and C4 will be connected. The scheme of doopration is in the archives. Thank you very much for the information about how to choose and install the metal-shukacha to everyone who, taking part in the discussed modernization of the scheme, especially helped with the preparation of the material Electrodich, fez, xxx, slavake, ew2bw, redkii and other colleagues of the radioamator.