DEBOUNCE_FOR_TOUCH_SWITCH

Published:2009/7/13 2:47:00 Author:May | From:SeekIC

Two CMOS inverters respond to high-impedance path between electrodes of touch switeh to provide finger-touch sensitivity and positive switching action with minimum components. Large time constant of R1C1 requires wait of about 4 s before attempting to retrigger circuit. C2 prevents oscillation from 60-Hz pickup when electrodes are touched.-H. Manell, CMOS lnverters Implement Finger-Touch ON-OFF, EDN Magazine, Jan. 5, 1978, p 90.



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