Posted to sci.electronics.design,sci.electronics,sci.electronics.equipment,sci.electronics.repair
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Looking for a Low Cost On Delay Timer
"John Fields" wrote in message ...
On Wed, 4 Sep 2013 11:21:01 -0700, "Guv Bob"
wrote:
"dave" wrote in message m...
On 09/04/2013 01:17 AM, Jan Panteltje wrote:
On a sunny day (Tue, 3 Sep 2013 16:01:31 -0700) it happened "Guv Bob"
wrote in
:
Will this work?
Size R & C so that when switch closes, relay energizes after 5 =
seconds, and remains energized until switch is opened.
http://img839.imageshack.us/img839/4650/uh3.gif
Yes, but 5 seconds needs a big C.
http://www.ebay.com/sch/i.html?_odkw...=0&_fr om=R40
Thanks Dave. That's exactly what I have been looking for. Problem is I can only find these or similar units in the $5-20 range from China (2-3 weeks). Omron and others available in US are $70+
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Why can't you use Jasen Betts' circuit?
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JF
What circuit is that? I don't see it.
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