false signals triggering 555 timer

Feb 20, 2004 1 Replies
A

anybody knows something about this? i got a good 7812 power supply with big capacitors and some small mkm , and pin 2 connected to + with a 10k resistor wich improved a lot,but not all of the error triggers.



thanks.abe



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I would suggest bypass caps from the Vcc pin to ground; 0.1uF ceramic, and

10uF tantalum should help.

Also, make sure the control input is bypassed to ground using a 0.1uF cap.

Regards, Bob Monsen

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