Electronic Components Kit Metal Detector DIY Welding Kit Treasure Detector Electronic Parts Production Teaching Practice

Condition : New
Type : Voltage Regulator

Electronic Components Kit Metal Detector DIY Welding Kit Treasure Detector Electronic Parts

Specification:

Item name: Metal Detector DIY Welding Kit

Board size: 70*61mm

Measuring distance: 5cm(Not influenced by the size of the measured object)

Product description:

Q1, L1, L2, C1, C2, R1 and RP form a high-frequency oscillation circuit. Adjust RP to make the oscillation circuit in a critical state, that is, make the oscillation circuit in a state of just starting vibration. Q2 and Q3 form a detection circuit. When the circuit oscillates normally, when the AC voltage generated by oscillation exceeds 0.6V, Q2 will conduct C4 discharge and short circuit in the negative half cycle, making Q3 cut off; When the detection coil is close to a metal object, eddy current will be generated in the metal conductor, which will increase the energy loss in the oscillation circuit and stop the vibration, so that Q2 will be cut off, C4 will be charged through R2, and Q3 will be connected to push the buzzer to make a sound. According to the sound, it can be determined whether there is a metal object under the detection coil.

Note: It's diy kits. Need to solder by yourself.

The package does not include battery.
Due to the light and screen setting difference, the item's color may be slightly different from the pictures.
Please allow slight dimension difference due to different manual measurement.

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