metal detector making
Dear brothers, today we have a good participation by one of the honorable members of the channel, brother Abu Yunis, where our brother Abu Yunis worked hard in making this device, and every hardworking person has a share, and his device succeeded, praise be to God.
This circuit consists of a group of transistors, resistors, and capacitors, which we will get to know now, God willing. Our circuit is based on a transmitter or transmitters, so to speak, where one of the transistors sends an electronic signal equivalent to approximately 100 kilohertz, and the other transistor sends almost the same signal, and the first transistor is connected to A coil is placed near the ground, while the second transistor is connected to a coil that is placed in the control box. The size of the coil is small so that the amount of the outgoing frequency is controlled, and when the two frequencies are equal, they are sent to the synthesizer transistor and the amplifier for the signal at the same time, and from here the successive amplification operations begin through 3 Other transistors until the speaker arrives, so the result is that there is no sound when the two frequencies are equal, and when the coil passes over a metal, a difference in frequency occurs, which is heard through the device’s speaker to indicate the presence of the metal.
Below is a picture of the circuit for the sufficient detector, which you saw in the video:
Schemes necessary for the manufacture of the device:
device components:
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