TOUCH SWITCH and TOUCH ON-OFF Circuit

Published:2013/3/5 20:55:00 Author:Ecco | Keyword: TOUCH SWITCH , TOUCH ON-OFF | From:SeekIC

The Touch Switch circuit will detect stray voltages produced by mains voltages and electrostatic build-up in a room. In the first circuit, pin 2 must see a LOW for the circuit to activate. If sufficient static voltage is detected by the plate, the chip will change state. If not, you will need to touch the plate and the 0v rail. In the second circuit, two touch plates are provided and the resistance of your finger changes the voltage on pin 2 or 6 to toggle the 555.



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