1 pulse to latch 3 second

Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=106419
Printed Date: May 05, 2024 at 10:54 PM

Topic: 1 pulse to latch 3 second

Posted By: megatfauzi76
Subject: 1 pulse to latch 3 second
Date Posted: July 29, 2008 at 1:03 AM

Hai,

Can anyone guide me. How to make 1 pulsed generate 3 second latch? Detail how to wired to relay and whay kind of capacitor i need.

Thank You

Replies:

Posted By: davngr
Date Posted: July 29, 2008 at 2:13 AM

ddirected 528t has an adjustable timer and directed 452t is an actual pulse generator don't know how long the pulses are.

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life is a comedy to think, a tragedy to feel

Posted By: megatfauzi76
Date Posted: July 29, 2008 at 9:11 AM

Thanks for the reply..

528t is expensive way...Im searching for cheapest way...Can anyone help me?

Thanks

Posted By: dualsport
Date Posted: July 29, 2008 at 8:04 PM

This is cheap-

Posted By: megatfauzi76
Date Posted: July 30, 2008 at 10:33 AM

Thanks dualsport..

Look complicated...Can u advise me..how to do only use relay,capacitor,diode and resistor?

Thanks

Posted By: megatfauzi76
Date Posted: July 30, 2008 at 10:50 AM

Sorry Dual Sport...

Forgot something...can u modified this diagram to be 1 puls to 3 second latch? I found it in one of the forum...it been design from you..

Thanks again

Posted By: dualsport
Date Posted: July 31, 2008 at 9:55 PM

The other circuit is supposed to take two pulses and only pass the second pulse through, it doesn't really change the timing like you want.
If you just want a three second pulse output when you send in a short pulse, the first one would be the one to try.
If you're planning to send in a positive going pulse, then you wouldn't need the inverter chip. Just put the pulse into the diode directly.

Posted By: hotwaterwizard
Date Posted: August 09, 2008 at 6:09 PM

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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !

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