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Need Help with a power supply for a 12 volt DC project

Discussion in 'Power Electronics' started by Moonlit Road, Dec 11, 2016.

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  1. Moonlit Road

    Moonlit Road

    2
    0
    Dec 11, 2016
    Hello everyone. I built a boombox out of a tool box. The radio is powered by a 12 V alarm battery that is mounted inside the box, and it also helps keep the memory on the stations. To charge the battery, I am right now using a bench top 13.8 V regulated power supply. I would like to do away with that, so I can make the radio more portable, and look nicer. What I need is how can I make , or what do I need to get , to get 120 VAC from the wall , to inside the box, and then convert that to 12V DC so I can keep the battery charged, and power the radio at the same time, and have it look nice and neat? Thank you[​IMG]
     
  2. Minder

    Minder

    3,020
    640
    Apr 24, 2015
    Wall Wart? What is the current required?
    M.
     
  3. Moonlit Road

    Moonlit Road

    2
    0
    Dec 11, 2016
    No more than 5 amps
     
  4. Minder

    Minder

    3,020
    640
    Apr 24, 2015
    Wall Warts are common for 12vdc, if you need the 13.8 to charge with you would have to maybe pick up a AC version and tailor it, I have done this before, they are usually non-SMPS however, just a simple transformer, but often they can be opened up and tailored and a regulator fitted in the same case and re-sealed, just requires getting a little creative.!
    M.
     
  5. cowdough

    cowdough

    8
    1
    Aug 17, 2016
    laptop charger
     
  6. sundy

    sundy

    64
    5
    Aug 5, 2016
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