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Question for the experts regarding relays

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  • Question for the experts regarding relays

    Hey guys, I'd like to make use of an old head unit for in dash controls (volume, stations, etc.) so I was looking to use a Phidget interface kit. Now, it's got 5V outputs, but how can I use that to power the 12V power antenna? I don't really know how relays work, but is there such a thing as a relay that is controlled by 5V but uses 12V output? If not what would I need to do? Convert the 5V to 12V and just use a regular 12V relay?
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  • #2
    you use relays as switches....so yes.....you can hook up the relays to connect a 12v feed to your antenna when 5v is applied
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    • #3
      thats exactly what its designed to do,
      you use a small circuit wil low power and current draws to control a bigger one,

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      • #4
        like everyone says, goto the12volt.com for more info on relays
        PC Components:
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        My work log

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