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Author Topic: Building power supplies
doughboy
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Can someone please give me detailed plans of give me a link to a webpage where I can learn to build a power supply to work with DC "car output" to something a computer could use or a playstation ect... ect... THANKS!

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Doughboy
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Posts: 685 | From: Alton, Illinois | Registered: May 1999  | Report this post to a Moderator
Audiophyle
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Computers use +12v -12v and +5v -5v. Pretty easy to get a couple of resistors for the 5v deal, but as to making negative voltages, I dont know, maybe Tech can help ya...

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STILL waiting to hear a GOOD pair of HLCD's!!

If it dont fit, force it... if it breaks, it needed to be replaced anyway...

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Posts: 3120 | From: nowhere | Registered: May 1999  | Report this post to a Moderator
ShadowStar
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You could simply buy a quality INVERTER for power,

But computers have three different power connector styles, and these are either XT, AT or ATX. For a good computer, you'll use atx.

The problem is you need a non fluctuating 12 v positive, negative and 5 volt positive, negative.

I don't know what the playstation runs at, but I'm sure you could bypass the built in power supply and use a specific voltage multiplier circuit to supply it, but it would have to be low ripple.

If you want to discuss this, mail me at
jst1@keene.edu

ShadowStar

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Posts: 2578 | From: Somewhere In the Northeast | Registered: May 1999  |  IP: Logged | Report this post to a Moderator
ShadowStar
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Making the negative voltage would probably just be a matter of wiring a part of the power supply backwards, so that +12 is the common (0 level) and the ground is seen as -12 v, but I *could* be wrong, check it with a nice multimeter on experimental battery circuits before you wire your car and computer up like that (crackle crackle)

ShadowStar

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Posts: 2578 | From: Somewhere In the Northeast | Registered: May 1999  |  IP: Logged | Report this post to a Moderator
tech man
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It is possible to redesign a computer
power supply to do what you want but you
would have to replace almost everything on
the primary side of the main transformer and
rewind or replace the transformer itself.
I don't know of a place you can find the
plans for such a project. I am capable of
something like this but it would take 10
to 16 hours to pull it off. Not very cost
effective compared to a inverter...


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Posts: 926 | From: Sugarland, Tx | Registered: May 1999  |  IP: Logged | Report this post to a Moderator
   

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