Relay Chatter - Hatch door servo

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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=39406
Printed Date: May 15, 2025 at 6:22 PM

Topic: Relay Chatter - Hatch door servo

Posted By: charger69
Subject: Relay Chatter - Hatch door servo
Date Posted: September 20, 2004 at 7:45 AM

I'm bench testing 2 relays wired to flip flop pos/neg for a boat hatch actuator. One relay works just fine, the other may chatter or not work at all. If I remove the wires and test, it tests good. Tried with a couple of different relays with same result. I'm using the layout shown below. What gives?

posted_image

Replies:

Posted By: Teken
Date Posted: September 20, 2004 at 9:36 AM

How much holding current, and voltage are you applying to operate the relays?

As it sounds like there is not enough of one, or the other, to hold the relays open / close state.

Regards

EVIL Teken . . .

Posted By: charger69
Date Posted: September 20, 2004 at 9:47 AM

Im using a 10amp battery charger for benchtesting.

Posted By: charger69
Date Posted: September 21, 2004 at 6:46 AM

Thanks for the info Teken, power checked good but while I was there I re-checked all the leads. Seems one of the crimp connectors had broken a wire and it was arcing causing the relay to chatter!

Posted By: Teken
Date Posted: September 21, 2004 at 4:10 PM

Good to hear things worked out.

Regards

EVIL Teken . . .

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