Circuits of simple DIY metal tricks with transistors.

As a transmitter of victorious stations, a multivibrator, and as a receiver, a booster

audio frequency

Principle diagram
was published by Radio magazine.
MD Primach scheme - another option
Parameters of the metal joker
Operating frequency – close to 2 kHz;

- the depth of a coin with a diameter of 25 mm is 9 cm;

- sealing lid for a jar – 25 cm;

- Aluminum sheet measuring 200x300 mm - 45 cm;

- sewer hatch – 60 cm.

The trick is to adjust when the input is closed.

By selecting resistor R1 in the first cascade and R3 in the other, a voltage is installed on the collectors of the transistors, which is approximately half the life voltage. Then, by selecting resistor R5, the flow of the collector of transistor VT3 becomes equal to 5...8 mA..

After this, having opened the input, connect to the next coil of the L1 receiver and, receiving the transmission signal at a distance of approximately 1 m, reconnect to the device.

Ladovo joke is extremely popular.

Adults and children, amateurs and professionals joke. They search for treasures, coins, wasted speeches and buried metal stones. And the main guns for searching metal joker There is no trace of various metal jokes, no matter how “taste and color”. But for rich people, buying a ready-made branded metal machine is simply a financial burden. And who wants to pick up metal jokes with their own hands, and who wants to continue their small business on their own basis.

Self-propelled metal pranksters What is the section of our site?і about self-made metal jokers.

, I will select:

better metal schemes

, their descriptions, programs and other data for the preparation

do-it-yourself metal slayer . Here, do not wake up the circuits of metal jokers from the SRSR and circuits with two transistors.

1. Such metal detectors are not suitable for scientific demonstration of the principles of metal detection, and are not at all suitable for real detection.
2. All metal detectors in this section will be more technologically advanced.
3. Materials and skills for making wooden boards.
4. Minimal evidence of knowledge in electronics and electrical engineering as well.
5. And also straight arms will be even brown when folding the metal gun with your own hands.

Here you can find diagrams for self-folding of the following models of metal guns:

	Robot principle	I.B.
	Discrimination of metals	є
	Maximum depth by search
		є
	Operating frequency	4 - 17 kHz
	Collapsibility rhubarb	Middle

	Robot principle	I.B.
	Discrimination of metals	є
	Maximum depth by search	1-1.5 meters (to be equal to the size of the cat)
	Programmable microcontrollers	є
	Operating frequency	4 - 16 kHz
	Collapsibility rhubarb	Middle

	Robot principle	I.B.
	Discrimination of metals	є
	Maximum depth by search	1 - 2 meters (depending on the size of the cat)
	Programmable microcontrollers	є
	Operating frequency	4.5 - 19.5 kHz
	Collapsibility rhubarb	High

Devices used to detect metal objects in low-conductivity media are called metal detectors or metal detectors.

They can be used to search for black and colored metals.

Self-propelled metal detector for coins is designed to detect debris at a distance of 10 to 50 cm, and volumetric metals from 0.5 to 3 m.

The use of metal detectors has been around for a long time, and the greatest increase in their production began at the end of the 60s.

With all the progress and impersonality of circuits, any radio amplifier can make a metal prankster with their own hands, without going into great knowledge in electronics.

1. The main advantage of self-made metal swindlers is small expenses.
2. Let's take the simplest metal joker that operates on two frequency generators - a bit metal joker.
3. At the same frequency, the generators are synchronized, but when metal enters the field of one of the coils, the frequency of one of the generators changes.
4. As a result, the circuit produces a dynamic sound of the difference in frequencies of the two generators.
5. Tools and materials for the device

To create a self-contained metal machine, it is necessary to divide the process into three stages - construction, implementation of circuits, assembly into a single whole.

1. We will describe the approximate range of tools and materials that may be needed for this purpose.
2. Further on in the article it will be explained: from what metal can be collected for gold, and what material is best for vicorization.
3. Let’s finish preparing the tools for cob diggers.
4. For robots you need:
5. Tools for robots with wires and parts;
6. Nizh;
7. Saw for plastic.

At the extreme end, you can quickly cut it with a knife or a regular file;

Soldering iron; Set of twists. Required materials:

From the beginning it is necessary to consider the material and fastenings warehouse parts A metal scavenger will know the necessary components.

As a barbell, you can use a frame with an armrest, a pipe, a pipe made of sewn polyethylene or polyvinyl chloride (Fig. 2).

The coils and circuit are placed below on the stand, attached to the rod. So it is important to protect the stiffness of the barbell and its material. It’s better to give the advantage to the electricians, then.

do not carry out

electric strum

– plastic, wood, etc.

It is necessary to make a handle so that it is comfortable to handle the metal tool that is being prepared.

In the case of a police station, it is not required, but in another case, you can attach both a bicycle lining and another self-contained structure.

The stand for the circuit and the coil can be made from basic plastic.

I'll add a folding room

Having looked at the list of necessary materials and parts, it is obvious how to select metal crafts from them with your own hands.

To wind the coils, use a round object with a diameter of 20 - 25 cm. The number of turns is up to 30.

One end of the thread is drawn out and 10 turns are wound, after which, without breaking, the other end is drawn out.

Continue winding another 20 turns and the third end is output.

Reinforcements are made with a reserve of 10 to 20 cm. We remove the winding from the object and wrap it tightly with electrical tape, sealing the three wires (Fig. 5).

Another cat is made in a similar way.

For the greatest success, paint the cat as closely as possible, using mirror images.

Let's start collecting radio parts.

We place the parts on the board and then solder them according to the circuit on the board 4. If you use cardboard or material with openings, the parts are connected using insulated wires with some kind of crossbar.

When the prepared PCB is removed, soldering is completed until the tracks are ready.

The circuit can be placed in a wooden or plastic box.

We solder the coil circuits according to the circuit.

1. It was possible to carry the metal across to the coils.
2. On this cat, where the noise is heard, the remaining turn is output in the middle of the coil of the cat.
3. You can make small pieces of aluminum. We bring them to the cats and try to keep them quiet and the solitary clicking. Secured with glue.

We attach a tube to the cauldron and push a ferite cutting through it.

Having achieved the desired result, we secure the haircut in this position.

Watch the video below, which demonstrates how to earn

self-regulating regulator for adjustment in this way. With good hearing, you can successfully prepare a metal detector as a simple metal detector through discrimination and recognition of metal types.

Modernization

Once you have decided to make the simplest metal machine with your own hands, you can proceed to a small modernization without microcircuits on the little one 9. The details of the assembly are shown in Table 2.

U

new scheme

An RC circuit has been added, which consists of a resistor and a capacitor.

You must allow enhanced sensitivity to reach.

This is the name of this metal joke, having been separated through those that are pulsed, meaning the designation of the first two letters (PI-impulse).

Well, RA-T sounds like the word radioskot - that’s the name of the retailer’s website, where it was created and published.

According to the author, the Pirate is very simple and easy to learn in order to learn some basic skills in working with electronics.
The only disadvantage of such a device is that it does not have a discriminator, so it cannot recognize the color of metals.
It’s also impossible to work with it on the plots clogged with various metals.
Materials and tools for collection:
- microcircuit KR1006ВІ1 (or its overseas analogue NE555) - it will contain a transmitting device;
- transistor IRF740;
- K157UD2 microcircuit and BC547 transistor (they are used to collect a primary voltage);
- Wire PEV 0.5 (for winding the coil);
- NPN type transistors;

- materials for the casework;

- soldering iron, darts, other tools.

Other radio components can be added to the diagram. You also need to know the required plastic box for mounting the electronic circuits.
You will also need a plastic pipe for the valve rod, on which the coil is attached.

The process of folding a metal frame:
Croc first.

The optimal diameter of the frame is 1900-200 mm; a total of 25 turns are required.

After the cat is wound up, it is necessary to wrap the animal well with electrical tape for insulation.

To increase the depth of the coil, you need to wind it on a mandrel with a diameter of about 260-270 mm, and reduce the number of turns to 21-22.
The wire in your vikorist has a diameter of 0.5 mm. After the coil is wound, it needs to be placed on a rigid body, not on any metal. Here you need to think a little and look for a body that is consistent in size.

This is required to protect the cat from impacts during operation of the device.

The pins from the coil are soldered to a rich core, with a diameter of about 0.5-0.75 mm.

Best of all, if there are two, call each other. Krok five. Nalashtovoemo metal joker

When folded exactly behind the circuit, there is no need to adjust the metal gun, it provides maximum sensitivity.

A similar device, self-produced or manufactured at the factory, is used to search for any kind of metal under a ball of soil, no matter what kind of scraps there will be, media, or even more valuable.

Such devices are not only being discovered by gold miners, but also by various archaeological groups, patriotic forces (from the search for the remains of objects that were lost from the earth after another light war) and up to the hour of dismantling the territory.

Forms, like the circuits of metal tricks, vary.

This could be a disk, a mount on the handle, or maybe something like a microphone.

The essence of this device does not change - when any metal object is detected at a small depth, a singing sound is heard behind an additional buzzer, signaling the discovery.

Such devices operate based on the physical law of electromagnetic induction.

Its storage parts include a transmitter that receives a signal and sends it to a device (audio or visual), receiving the signal and buzzer or screen.

Electromagnetic vibrations reach the surface and are knocked out.

The next class of metal musicians is low-frequency.

Just a little bit of pressure behind the front, the scheme is simple, the stability is limited until it gets too far, but the sensitivity is still too small.

With increased energy of over 10 Vats, the depth of the possible search becomes approximately 5 meters.

Their indestructibility is due to the fact that, in addition to metal, stench reacts with large fragments of stone and concrete.

The brightest signal is detected on ferrous metal, and such a metal detector is also called a magnetic detector. There is little sensitivity to the power of the earth. IF

Another classification is metal detectors with increased frequencies - several tens of kilohertz.

The stench may have less good aroma, equalized with low frequencies. Be sure to get started with the pulse mode, which will be discussed a little later. There are not many similar devices in that with advanced mineralization or in swampy locality, the stench ceases to receive changes in the signal, so it is not possible to “pump” metals. HF Samy

metal pusher

Suitable for searching for high-value metals, but also at shallow depths.

It is not suitable for the discovery of golden fungi, which are found in the sand on the beaches.

The depth of penetration of the signal into the ground is no more than 80-90 cm. The results of the work depend on the tightness of the transmission coil, resulting only in dry non-magnetic soil, to which sand is applied.

To collect metal junk from disks, you need to follow the following algorithm:

• The headphone plug will not be needed, and therefore the wire will be cut, and the darts will be stripped to a depth of about 1 cm.
• The stripping skin is divided into two equal parts, one going to the mirror part of the disk, and the other to the living element.
• Because the mirror surface of the disks is on both sides, use additional glue to attach one of the parts to it firmly.
• Since the discs are one-sided, then everything is simpler. The contact side is the side you are writing..
• The parts on the CDs themselves are secured with duct tape

DVDs

The calculator is sealed with the same electrical tape between the disks, and a living element is secured on the surface of the DVD.

At which point the work is completed and the metal gun is ready with the available tools.

As you can transfer, the process is completely cumbersome and inexpensive, both from a financial plan and from time to time.

Of course, when working with a metal crafter, the circuits of this type of installation are simple, its characteristics cannot be compared with those of professional devices, but elementary structures in the ground can be found with this help.

If you need a larger device, a stronger, less simple metal gun, you can make it from an old radio receiver. Metal joker from radio Using this method, you can prepare a detector that will work as a simple metal detector. To do this, you need to find an empty box of discs, a calculator, an AM radio, double-sided tape and electrical tape. The radio is glued to the inside of the disk box with double-sided tape, and the calculator is glued to the other side on a folded surface.

It is placed on the receiver itself

high frequency

in the AM band, or closest to it, regardless of the noise of any

third-party sounds no. Before the structure is cut off, you can attach a stick like a mop. After this, you will no longer need to adjust the detector. You can pick up a simple metal joker.