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 Long Duration Time Delay Relay		  New Topic  Reply to Topic
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Doug Albertson
New Member

1 Posts
Posted - Nov 04 2009 :  11:38:45 AM  Show Profile  Reply with Quote
I need a low cost, moderately accurate, time delay circuit for delay on make (when power is turned on, delay the relay changing state) with a delay duration of approximately 8 days.

Darkthero
Apprentice

USA
51 Posts
Posted - Nov 04 2009 :  4:27:30 PM  Show Profile  Reply with Quote
wow 8 days... im not sure that there is one for 8 days. you might be able to get a 7day one and mod it..
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pebe
Nobel Prize Winner

United Kingdom
1078 Posts
Posted - Nov 04 2009 :  5:12:27 PM  Show Profile  Reply with Quote
The cheapest way would be to use a PIC microcontroller.
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audioguru
Nobel Prize Winner

Canada
4218 Posts
Posted - Nov 04 2009 :  9:17:41 PM  Show Profile  Reply with Quote
A CD4060, CD4541 and a few other Cmos timer/dividers can give an output that is a week or more.
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