Electrical Live Wire Detector


Posted on Feb 5, 2014

This circuit can detect only electrical wires connected to the mains (live wire). It has an LED for visual signalization and a buzzer for audio. As the electrician places the detector closer to the electrical wire the LED will flash at a higher frequency. As you can see the schematic of the wire detector circuit is quite simple. The first stage ha


Electrical Live Wire Detector
Click here to download the full size of the above Circuit.

s the antenna in base of T1; capacitor C1 is used for filtering parasite high frequency signals which are captured by the antenna. The low freq signal is captured through C4 and is applied to the amplifier stage (T2) and then to the pulse shape filter made with R10, R11, C3 and T3, T4 and T5. The final stage (T5) is a current amplifier for the LED or you can place a buzzer too. Connect the 9V battery and place the circuit close to a electrical wire that is connected to the main volage. Adjust P1 rotating the cursor to the left completely. Press the push-button and the LED should start flashing. Now adjust P1 until LED is dim. In this moment the detector circuit is set to maximum sensitivity.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Voice Operated Switch (VOX) Circuit Using LM346 For Public Address Amplifier System
    NiCd NiMH Battery Charger
    chaos
    max2659 gpsgnss low noise amplifier
    dc to dc converter
    Actuator circuit
    0-1 hours of power a circuit diagram of the timing of the AC power supply
    DC shunt regulator power supply circuit



    Top