On Thu, 10 Mar 2011 21:25:04 -0500, "Martin Riddle"
wrote:



"Jim Thompson" wrote
in message ...
I need a 10 SECOND pulse stretcher!

I vaguely recall doing that using a counter, but can't recall the
details.

...Jim Thompson


How accurate?

Wow, Fairchild has the 4538 as obsolete. bummer.
I've used the 4040 counter in the past to generate long pulse times. Fed
by a slow running 555.
Just what you wanted to hear

Cheers



Sloppy. I can tune a fairly accurate master oscillator with a pot.

I'm leery of RC due to leakage.

...Jim Thompson
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