Simple Metal Detector DIY Kit Metal Locator 3V-5V DC Treasure Hunting

Detailed Information About The Product:

Supply voltage: 3-5V
Maximum detection range: 5CM Best detection range: 1 CM - 2 CM
Principle explanation: Q1 L1 L2 C2 C3 R1 W composed of high-frequency oscillation circuit adjustment potentiometer W you can change the oscillation stage gain the oscillator oscillating in a critical state that is just the oscillator start-up. Q2 Q3 when the composition of the detection circuit the circuit normally oscillate voltage AC voltage exceeds 0.6V Q2 be in the negative half cycle of conducting the C4 discharge short circuit resulting in Q3 ends; when it detects metal objects near the coil L1 be metal conductor eddy current is generated the oscillation circuit of the energy loss increases positive feedback weakened in the critical state of the oscillator weakened if not impossible to maintain the minimum required energy oscillations and to stop so Q2 is turned off R2 to C4 charge Q3 is turned on pushing the buzzer sounds. According to whether the sound you can determine whether the detection coil underneath the metal object. Colour: Main Color Blue
Material: ABS+ Metal
Size: 66*61mm
Package Contents:
1 x motherboard unassembled - require soldering
1 x set of accessories
1 x set of shell
Note: If you need longer detection than 5CM range and higher sensitivity please create their own search coil search coil diameter of the larger suppliers be farther away from the probe.
Only the above package content other products are not included.
Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
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