CMOS signal "debouncing" - Electronic Circuits Projects Diagrams Free

batman · 28th December 2003, 11:55 AM

i would like to modify a CMOS signal so that if it goes high several times in a half second, i only get that it was high for a half second. is there a capacitor configuration i could use that would stay high for all the little triggers, then discharge and start over when triggered again?

Sebi · 28th December 2003, 12:42 PM

As i read, You need a retriggerable monostable....

Chilli · 28th December 2003, 12:58 PM

I used this circuit in many applications.

Substituting the 100K & the 10uF with otther values will give you different timings.

t=1.1XRXC In this case about 1.1 seconds (1.1 X 100 X 10) / 1000

Hope this helps

Chilli

Chilli · 28th December 2003, 12:59 PM

OOOps Sorry forgot to attach the diagram

ops:

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28th December 2003, 11:55 AM	(permalink)
batman	CMOS signal "debouncing" i would like to modify a CMOS signal so that if it goes high several times in a half second, i only get that it was high for a half second. is there a capacitor configuration i could use that would stay high for all the little triggers, then discharge and start over when triggered again?

28th December 2003, 12:42 PM	(permalink)
Sebi	As i read, You need a retriggerable monostable....

28th December 2003, 12:58 PM	(permalink)
Chilli	I used this circuit in many applications. Substituting the 100K & the 10uF with otther values will give you different timings. t=1.1XRXC In this case about 1.1 seconds (1.1 X 100 X 10) / 1000 Hope this helps Chilli