5v to 12v

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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=75782
Printed Date: May 15, 2024 at 4:11 AM

Topic: 5v to 12v

Posted By: carstereoman
Subject: 5v to 12v
Date Posted: April 06, 2006 at 12:12 PM

Can I use a relay to take in 5 volts and make it 12 volts? I have a lexus with a 5 volt antenna power wire that I need to run 12volts for aftermarket antenna.

Replies:

Posted By: bigscratch
Date Posted: April 06, 2006 at 3:39 PM

You should be able to find a relay that will work on 5 volts. You will need to find an alternate power supply for the 12 volt circuit since the 5 volts will only be used to actuate the relay.
A look thru the radio shack site indentified a few diffent models that would work for you.

Posted By: ill-logix
Date Posted: April 07, 2006 at 11:55 AM

Is the 5v wire the signal wire going to the antenna or does the antenna actually use 5v dc to operate? If 5v is the signal use a relay with 5v coil. Then using the normally opened contacts run +12v from that battery to the new antenna.

Posted By: infinkc
Date Posted: April 12, 2006 at 7:33 PM

use a transistor to a relay

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