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Constant to momentary?

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=81904
Printed Date: May 12, 2025 at 1:31 AM


Topic: Constant to momentary?

Posted By: debeerd
Subject: Constant to momentary?
Date Posted: August 22, 2006 at 6:24 AM

posted_image

How long does it take for the 10k resistor to bleed off the caps charge ?




Replies:

Posted By: Velocity Motors
Date Posted: August 22, 2006 at 8:09 AM
You can increase the output time by simply changing the value of the capacitor. This one will give you about a 1/2 second output.

-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA



Posted By: debeerd
Date Posted: August 22, 2006 at 1:18 PM

The time is right, I used a 2200uf cap.

But it takes long for the cap to discharge, over 30 seconds.

So when I activate it, I have to wait 30 seconds or so before I can activate it again.

Will changing the resistor do anything ?




Posted By: Velocity Motors
Date Posted: August 22, 2006 at 10:25 PM
Lowering the resistance will allow for a faster bleed off time.

-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA



Posted By: debeerd
Date Posted: August 23, 2006 at 2:07 AM

I've got some 1k's laying around here somewhere, will give it a try.

Thanks for the helpposted_image


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