trigger relay when device powered on

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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=131237
Printed Date: April 27, 2024 at 11:49 PM

Topic: trigger relay when device powered on

Posted By: jassing
Subject: trigger relay when device powered on
Date Posted: April 21, 2012 at 8:45 PM

I have a transceiver -- it has no "remote on" output -- it has 12volt +/- -- What I want t do is when I turn on the transceiver, a relay is triggered (to power up an amplifier)

I tried putting a 12v relay "in line" with the transceiver, but it used too much power and the transceiver didn't fully power up.

Any ideas?
thanks
-j

Replies:

Posted By: wysiwyg
Date Posted: April 21, 2012 at 8:55 PM

https://www.pac-audio.com/productDetails.aspx?Productid=175&CategoryID=28

Posted By: jassing
Date Posted: April 22, 2012 at 5:16 AM

Thanks; but that relies on speaker output to trigger it, no?

Posted By: hotwaterwizard
Date Posted: April 22, 2012 at 3:45 PM

Does the Tranciever have an on off switch that clicks or just a pushbutton?

I would solder a tap off the switch to power a cube relay.

posted_image

If you are powering it with AC Voltage here is another way

Automatic Load Sensing Power Switch
https://www.aaroncake.net/circuits/loadswitch.asp

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

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