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spenner
New Member

United Kingdom
1 Posts
Posted - Nov 26 2010 :  5:41:35 PM  Show Profile  Reply with Quote
this time delay circuit looks just like what I need
Can it be adapted to 12 vdc
And when power is turned on I need 0 -10 sec variable time delay
to operate a relay and to stop when power is switched off
Many thanks
Spenner

Aaron Cake
Administrator

Canada
6718 Posts
Posted - Nov 28 2010 :  10:28:37 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
It will run on 12V as is. Adjusting the value of R1 and C1 changes the delay time. Check the 555 timer datasheet for the formula to calculate this.
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k.anderson3454
New Member

USA
1 Posts
Posted - Dec 01 2010 :  12:40:21 AM  Show Profile  Reply with Quote
What is R1 and C1??
Karen W Anderson
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Aaron Cake
Administrator

Canada
6718 Posts
Posted - Dec 04 2010 :  10:21:58 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
The resistor and capacitor that set the time delay.
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jeal22
New Member

Philippines
2 Posts
Posted - Feb 19 2011 :  12:07:53 AM  Show Profile  Reply with Quote
how to use the 6v relay 5 pins. pls help.we dont know the configuration for this relay.thanks :)
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Aaron Cake
Administrator

Canada
6718 Posts
Posted - Feb 19 2011 :  10:20:39 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
I don't know the pinout of your relay either.

Find the coil with your ohmmeter, then use a continuity tester to locate the contacts. Regular old relays are very easy to figure out. Often you can just pop off the case and see the contact configuration and coil connections directly.
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