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5v to 12v


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carstereoman 
Member - Posts: 48
Member spacespace
Joined: May 02, 2002
Location: United States
Posted: April 06, 2006 at 12:12 PM / IP Logged  
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.
bigscratch 
Member - Posts: 9
Member spacespace
Joined: September 02, 2002
Location: United States
Posted: April 06, 2006 at 3:39 PM / IP Logged  
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.
ill-logix 
Member - Posts: 39
Member spacespace
Joined: April 07, 2006
Location: United States
Posted: April 07, 2006 at 11:55 AM / IP Logged  

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.

infinkc 
Copper - Posts: 438
Copper spacespace
Joined: October 28, 2002
Location: United States
Posted: April 12, 2006 at 7:33 PM / IP Logged  
use a transistor to a relay
There are 10 types of people in the world, ones that understand binary and ones that dont.

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