I have been trying to de-bounce some tactile switches and after testing several ideas I came across this circuit that only works if R2 is between 470r-1k. as it is, the 4027 changes state while the push button is depressed, but reverts as the button is released. Supply voltage is 10 volts.
I have tried swapping the position of r2 and the push button so that it changes state on release, but again, that only works when r2 is 1k or less.
Oscilloscope shows that the switch is de-bounced. I have tried grounding all the other inputs for the second flip flop in the chip, and wiring it in the same way. Again, it works fine if r2 is 1k or less.
Oh, yes there is lots of proper decoupling of the ic, a 100n and 2.2mfd tant right on the supply pin.
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