Ed,
I found three logic oscillator with multi stage ripple counters. This will make long timing period possible with smaller capacitors
CD4521B
CD4541B
CD4060B
All these will work at 10V
Two thoughts:
1) Use two CD4541B chips, one in free-run mode (MODE = "1") to provide 4.5Hz to the second one on its external clock input. The second CD4541B would then run as a one-shot.
2) If you don't necessarily need the operating voltage…
Other Parts Discussed in Thread: CD4541B , TPL5110 I'm looking for a one shot timer with a long delay (~4 hours). I've been looking at the CD4541B. To use this chip I need to set the frequency to about 4.5Hz. The equation for setting the frequency in the…
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