Metal Detector Circuit Diagram and Working
- When the LC circuit that is L1 and C1 has got any resonating frequency from any metal which is near to it, electric fieldwill be created which will lead to induces current in the coil and changes i...
- Variable resistor is used to change the proximity sensor value equal to the LC circuit, it is better to check the value when there is coil not near to the metal. When the metal is detecte…
- When the LC circuit that is L1 and C1 has got any resonating frequency from any metal which is near to it, electric fieldwill be created which will lead to induces current in the coil and changes i...
- Variable resistor is used to change the proximity sensor value equal to the LC circuit, it is better to check the value when there is coil not near to the metal. When the metal is detected the LC c...
- When the output pin is high the resistor R3 will provide positive voltage to transistor Q1. Q1 will be turned on and led will glow and buzzer will give the buzz. Resistor r2 is used to limit the cu...