To debounce a soft switch

kmj

Member
2004-02-10 12:00 pm
Falkenberg
Hi, I got this soft switch from a friend and since I needed three for my system I put them together. The problem is that they bounce something terrible. My undeducated guess is that the NE555 sences the pulse from the switch and then "tells" the transistor to activate the relay. The bouncing is due to the fact that the little chip reacts to every litte disturbance it comes across and the solution is to make the NE555 ignore shorter pulses and just react to some more firm ones.

So, am I right and if so, how do I do it?

The circuit I used is attached and I hope that it is OK to post it. Since I don't know where it came from I can't ask.
 

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