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Thread: AC -> DC power supplies

  1. #1
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    Default AC -> DC power supplies

    I've been using server power supplies for a couple years now for mobile radios throughout the area and thought I would share. A comparable 47ish amp power supply sold commercially is around $320USD.

    Here is a current fleabay listing to give an example of what I used.
    http://www.ebay.com/itm/Quality-RC-P...20843595474%26

    We use a small car battery at the fire station with a float charger. The radio ran for almost a week with no electricity, including some transmitting.


  2. #2
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    Looks fine, but some radios are fussier than others & prefer to run on 13.8 volts. A month ago I picked up a used Astron 18 amp switcher for $10. The case looked tired, but the electronics were fine & the unit works perfectly. Years ago I had an Icom IC 207, & it didn't like 12 volts. When I ran it on a car battery it would lock up in transmit until I disconnected the 12 volt connection, but it ran perfectly on 13.8 volts. GARY

  3. #3
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    Sometimes you can adjust switchers, or tweak the regulated reference to get 14 volts.

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    http://www.rcgroups.com/forums/showthread.php?t=1292514

    This is where you want to look. Several of the power supplies are capable of > 12.5V out and > 40A.