Simple One-Wire Touch Detector circuit


Posted on Feb 6, 2014

This simple circuit can be used to activate whatever you like, for example, by connecting it to microcontroller, relays, secret alarms, robot applications or just turn on LED1 which lights up as long as you touch the metal plate. The circuit consists of voltage divider R1 and R2, one Schmitt trigger/inverter gate from a 40106 IC, a small capacitor to keep strong RF at bay and LED1 with current limiting resistor R3. The metal plate is connected via a wire to R1. R1 and R2 together form a voltage divider..


Simple One-Wire Touch Detector circuit
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Digital Volt and Amp Meter
    Voltage-Tuned Vhf Oscillator
    Soft Start For Switching Power Supply
    one ic two tones siren with
    led lights using analog flip flop circuit diagram
    PC joystick interface
    Fox Hunting



    Top