touch switch circuit using 555 ic


Posted on Feb 5, 2014

This is a circuit for touch switch circuit. This circuit is almost same with touch door alarm. This circuit uses a 555 timer as the bases of the touch switch circuit. This is the figure of the circuit. The operation of this circuit is begin, when the plate is touched the 555 timer is triggered and the output on pin 3 goes high turning on the LED a


touch switch circuit using 555 ic
Click here to download the full size of the above Circuit.

nd the buzzer for a certain period of time. The time that the LED and the buzzer is on is based on the values of the capacitor and resistor connected to pin 6 & 7. The 10 M resistor is on pin 2 causes the circuit to be very sensitive to the touch.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    LED Flashing circuits
    Simple split power supply
    Audio-power-amplifier
    Farnsworth Model GT-051 Bakelite Radio (1948)
    tape content monitor
    fm am mw sw antenna amplifier
    LED Phototherapy Unit
    Bus Interface Description RS422
    A Battery Powered Burglar Alarm With A Timed Siren Cut-Off
    Keypad Operated Switch No.2 - testing your circuit



    Top