Hier ist ein guter Artikel von Jack Ganssle dazu:
Reinhardt
Tastenentprellung
May 10, 2015
5 Replies
Sorry wrong group.
Reinhardt
n.
Maybe, but nice article on modern switch debouncing--thanks!
(Oder soll ich sag' ?)
Cheers, James Arthur
It was cited in this group.
Better
Reinhardt
For the friends of the 555 timer IC out there, here's the circuit of a
555 based key debouncer (graphics copy-pasted out of the paper above and from the Elektronik-Kompendium website):
formatting link
Note the wide hysteresis of the 555 (1/3 Vcc). That's much larger than "typical" Schmitt triggers provide, in a noisy circuit this can give a wider safety margin.
Regards Dimitrij
See NoiseBlank.pdf on the S.E.D/Schematics Page of my website... predates the utah.edu paper first pub date by 14 months. ...Jim Thompson
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I love to cook with wine. Sometimes I even put it in the food.
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