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 Long Duration Time Delay Relay

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Doug Albertson Posted - Nov 04 2009 : 11:38:45 AM
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.
3   L A T E S T    R E P L I E S    (Newest First)
audioguru Posted - Nov 04 2009 : 9:17:41 PM
A CD4060, CD4541 and a few other Cmos timer/dividers can give an output that is a week or more.
pebe Posted - Nov 04 2009 : 5:12:27 PM
The cheapest way would be to use a PIC microcontroller.
Darkthero Posted - Nov 04 2009 : 4:27:30 PM
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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