[sdiy] Issue with CD4024 Ripple Counter

m brandenberg mcbinc at panix.com
Sat Sep 18 21:04:24 CEST 2021


On Sat, 18 Sep 2021, David G Dixon via Synth-diy wrote:

> Also, I would remind you that I set up a test rig on breadboard, with
> similar circuitry (an opamp comparator into a diode), and the 4024s
> either didn't work or looked real bad (lots of hash) even though
> the driving waveform is very clean.

Sorry to belabor the point but the 'one diode' mention has made
me twitch twice now.  Is that one diode feeding into a passively
pulled up (or down) input or one diode into a floating node that
might be drifting around metastability?




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