Latching Relay
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Latching Relay 
TECH Senior Member
Joined: Apr 2004
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From: Texas
There is no such thing as a latching relay.
As you can see from the picture, once the connection from 86 to 85 is let off, the 87 becomes closed and 87a becomes open again.
As you can see from the picture, once the connection from 86 to 85 is let off, the 87 becomes closed and 87a becomes open again.
Last edited by 2MuchRiceMakesMeSick; Mar 27, 2005 at 08:28 AM.
Joined: Nov 2003
Posts: 11,328
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From: Jacksonville, FL (originally from Toronto Canada)
Originally Posted by 2MuchRiceMakesMeSick
There is no such thing as a latching relay.
Here is how to wire a normal 5-pin SPDT relay to latch in the on position and provide constant power when it receives a momentary positive pulse:
And here is how to wire a normal 5-pin SPDT relay to latch in the on position and provide constant ground when it receives a momentary negative pulse:
