relay basics

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=26498
Printed Date: May 18, 2024 at 3:30 AM

Topic: relay basics

Posted By: dwjack
Subject: relay basics
Date Posted: February 15, 2004 at 1:15 AM

I don't want to sound like an idiot but how do you wire a diode on a relay? I understand diode's inline for wires but how exactly is one connected for a relay? is it placed underneath the cover of the relay or is it placed on the pins somehow?

Replies:

Posted By: dickpeter
Date Posted: February 15, 2004 at 8:21 AM

The best way I found is to buy the relay harness from parts express.

They sell one with the diode all ready installed.

https://www.partsexpress.com/pe/showdetl.cfm?&User_ID=16532957&St=8137&St2=-64250764&St3=55753907&DS_ID=3&Product_ID=9686&DID=7

Posted By: dieggo98
Date Posted: March 28, 2004 at 6:30 PM

A diode across a relay prevents voltage spikes which sometimes lead to "relay chatter". The striped side of the diode is usually connected to the 12V leg of the relay. Click here to see an actuall diagram in action.

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