Pin-pointer with own hands: diagram and description

Pinpointers in our time are called compact metal detectors. By the accuracy class, they are quite different. It should also be noted that devices of this type have their own sensitivity. The main element of the pinpointer can be called the coil. It is installed most often of the orthogonal type. However, in this situation, much depends on the accuracy class of the device. In order to assemble a simple pin-pinter with your own hands, it is necessary to familiarize yourself with known configurations.

Model on a two-wire capacitor

To make this type of pin-pin with your own hands, it is necessary first of all to prepare the case for the device. To do this, many experts recommend using a conventional flashlight. The main problem at this stage is to find a good modulator. As a rule, a nonlinear analog is selected for a two-wire capacitor. The coil must be located directly in front of the device. Batteries should be installed behind the modulator. You can also take them out of the flashlight. At least the power of the batteries must be 200 mAh. For 25 minutes of continuous work, this is enough.

Using three-wire capacitors

It's quite difficult to make a pin-pin with three-wire capacitors. The modulator in this case is suitable only for linear type. Nowadays it is not easy to find it in radio electronics stores. Also note that the coil must be placed under the amplifier. Some additionally equip the devices with zener diodes. To improve the sensitivity of the model, they are ideal. Batteries in this situation can be used as standard from a flashlight.

Model with signal interruption

To assemble this type of pin-pin with your own hands, you must first take the case from the flashlight. Minimum modulator threshold frequency is required to withstand in 200 Hz. All this will allow the sensitivity of the device to maintain a high level. As a tester, this device is used quite often. To activate the interrupt mode, the controller must be installed in the design.

Most often it is used push-button type. In this case, it is necessary to pay attention to the features of the hull that belonged to the flashlight. The coil for this purpose is better to choose a simple one. However, it must withstand the input limit voltage of 15 V. All this will improve the accuracy of the readings.

Modification of "Kid-FM2"

It's quite easy to assemble pin-operator "Kid-FM2" with your own hands. This device differs in that its sensitivity is low. However, the cost of the model is extremely low, and for home use, this device is ideal. The modulator in this case is of a non-linear type. It is mounted directly next to the regulator.

Most often in the market you can find exactly rotary analogs. The inductance coil input threshold voltage is able to withstand a maximum of 10 V. It should also be noted that this device has a high current conductivity. This was achieved by installing a zener diode. Further, in order to assemble the pin-pin by yourself "Malysh-FM", it is necessary to solder the capacitors. Only then are the contacts connected to the zener diode. At the end of the job, it only remains to fasten the batteries in the casing.

Pinpointinter on transistors of low sensitivity

Make a low sensitivity pinopointer your own hands on transistors is possible thanks to such a device as a beeper. It is installed in the housing immediately behind the modulator. The amplifier for this device is suitable only for impulse type. In this case, the capacitors for the device can be selected different. However, they must withstand the input threshold voltage at a level of 5 V.

Also it should be noted that zener diodes are installed in the device quite often. The limiting frequency is welcomed at 200 Hz. It is important to consider that the accuracy of the readings depends on the inductor. The transmission width of this element most often does not exceed 3 microns. Batteries for the model are selected with a power of not more than 600 mAh. Enough about this, so that the device continuously worked for 30 minutes.

High sensitivity model

High sensitivity how to make a pinopter by yourself? To understand this issue, it should be understood that the coil will be quite powerful for assembling. The minimum threshold voltage it is required to withstand at 20 V. It should also be noted that the modulators in this case are suitable only for linear type. The accuracy of the readings depends also on the type of condensates.

In this situation, many experts advise using open-type models. On average, the capacitance parameter of these elements fluctuates around 5 pF. However, in this situation, much depends on the manufacturer of capacitors. If we talk about the zener diode, then it is used with increased resistance. This is necessary to increase the sensitivity of the device. Batteries for such a model should be selected with a power of at least 900 mAh.

Modification of Minimax-PP

To assemble the pinpointer with your own hands Minimax-PP, you need to pick up the bead of the PP20 series. It should also be noted that in devices of this type vibration mechanisms are installed. At the same time, the indicators are very diverse. If we talk about the coil, then in this case it is used in the orthogonal type. The threshold input voltage of this component is required to withstand at least 15 V. In this case, the resistance in the circuit should not exceed 4 ohms.

The sensitivity of this device depends largely on the capacitors. There are two of them in the standard scheme. One of them must be installed near the coil. In this case, the second is attached to the output of the modulator. The main problem of these devices can be considered a small transmission bandwidth at the level of 2 microns. Due to this, amplifiers are used in devices of this type rather rarely.

Device with integrated controller

Gathered this type pinpointer own hands (the diagram is shown below) is quite simple. First of all, you need to choose a good case for the device. In this case, the integral type controller does not take up much space. If desired, it can be purchased at any store with radio equipment, and it costs very little. A distinctive feature of this element can be safely called good conductivity. Condensers are installed in this case of a two-electrode type. The resistance parameter in them on the average fluctuates around 2 ohms.

It should also be noted that the coil must be installed first. To do this, you will need to use a blowtorch. Then the modulator is attached directly. At the same time in the rear of the battery should be. The amplifier in this case is useless to use. This is due to the fact that the sensitivity of the device is significantly reduced due to an increase in the limiting frequency of the device.

Using multilayer capacitors

It's going to be assembled with multi-layer capacitors by pin-pin with their own hands (the diagram is shown below) only in the presence of orthogonal coils. Modulators in this case are suitable for linear and nonlinear types. It should also be noted that in devices of this type, vibration mechanisms are often installed. In this case, bipers can be found quite often.

To increase the sensitivity of the device, zener diodes are often used. At the same time, cardiod analogues are very popular nowadays. To install them you will need to use a blowtorch. In general, it should be noted that models with multi-layer capacitors are universal, and for home use are ideal. With their help, a person is able to quickly find out the exact location of the wiring in the wall.

Model on a monolithic board

It is quite easy to assemble this type of pin-pointer with your own hands. These devices differ not only in their high accuracy but also in their good sensitivity. For professionals, this model will work well. The device must be assembled with the fixation of the modulator. In this case, many experts recommend using linear analogues.

However, nonlinear modifications are also often encountered. Beeper in this case is installed behind the coil. The input threshold voltage of the device must not exceed 20 V. For this purpose, zener diodes are mandatory. Regulators in this case are soldered at will. At the end of the job, it only remains to fix the batteries.

Pinopter with resonant regulator

To fold the device with a resonant regulator, it is necessary to prepare the soldering lamp in advance. First of all, a qualitative modulator is selected for the device. Many experts in this situation still recommend the use of linear analogs. Find them in the store is quite difficult, but they should cost a little. On the average, the conductivity parameter is 3 / i. Due to this, the input threshold voltage can be relied on at a level of 15 V. Zener diodes for the device are very diverse. Resistance they must keep at a level of 5 ohms. Also it should be noted that in beepers the device with regulators does not need.

To install the coil in this case is expedient in the last place. In this case, insulation of the wiring should be given special attention. Also it should be remembered that the case of the device should be completely hermetic. For this purpose, a rubber seal can be used as an option. Directly the regulator should be soldered to the modulator. Capacitors in this situation are used mainly in the field type. The minimum battery capacity should be 800 mAh.