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Thread: 110 12v supply

  1. #1
    Constant Bitrate
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    Post 110 12v supply

    how much do those 12v regulated supplies cost that u can test stuff at home for?

    we used to use them in my intro to electronics class, but those things were hand built.

    anyone know where i can get one for cheap?

  2. #2
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    Post

    I just use an old model train power supply. I think if you look you will find something that has 12v and is probably laying around the house.

    Or just use an old computer power supply....
    1983 BMW 733i
    Cyrix 166 32MB with MPXPLAY And no display. Player sits on the back seat with a keypad in front. Someday I'll mount this thing for good...
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  3. #3
    Retired Admin Aaron Cake's Avatar
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    Cool

    Most of the surplus electronics companies will have a supply around that will work. Usually for under $15. However, you may just want to make one. See http://www.aaroncake.net/circuits for several power supply schematics.

    Or, use an old computer power supply as suggested above.
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  4. #4
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    Post

    i though you couldnt just hook up an at psu and get 12v off of it? don't they require a load on the 5v line or something?
    "if everything is under control, you're not going fast enough!"

  5. #5
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    Yeah, you're right. I bet there's a way around that but it's probably just easier to find a different power source....
    1983 BMW 733i
    Cyrix 166 32MB with MPXPLAY And no display. Player sits on the back seat with a keypad in front. Someday I'll mount this thing for good...
    *****************************
    Gathering parts for carplayer v2.0!

  6. #6
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    Post

    It's easy to get around that. When I'm using a power supply to test stuff, I just plug in an old 500 MB hard drive, have it spin up, and that's enough to keep the power supply on.

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