May 29, 2002 #1 L linjyh Junior Member level 2 Joined Apr 1, 2002 Messages 23 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location Taiwan Visit site Activity points 100 I want to design power on-off circuit using tact switch. Please give me some hints. Thanks a lot! :roll:
I want to design power on-off circuit using tact switch. Please give me some hints. Thanks a lot! :roll:
May 29, 2002 #2 A algilsan Advanced Member level 4 Joined Jan 20, 2002 Messages 116 Helped 7 Reputation 14 Reaction score 6 Trophy points 1,298 Location chile Visit site Activity points 1,078 well, first you use a little metal surface like you tact sensor, then you must amplifier this signal, normally with an op amp, and then you have to use a comparator to switch on / off a transistor that control , per example a relay
well, first you use a little metal surface like you tact sensor, then you must amplifier this signal, normally with an op amp, and then you have to use a comparator to switch on / off a transistor that control , per example a relay