Author Topic: Cheap Power Supply  (Read 1905 times)

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John

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Cheap Power Supply
« on: January 03, 2008, 10:40:43 AM »
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Check this out ..

Quote
For those of us using Zephers, there is a cheep 12 v supply that most
of us have laying around the house or can get free for the asking or a
sharp eye on trash day. 12v+, 12v-, 5v+, 5v- and 3v-. 12v+ usually
about 25 or more amps. Fully regulated and filtered. Plenty of power
even for a club layout at a show!!!

Pull the power supply out of an old PC and follow the directions here
http://web2.murraystate.edu/andy.batts/ps/powersupply.htm
Anyone on this list will have no problems with this project. 10 bucks
worth of parts and about 2 hours.
Have fuN
Michael Duckett

DKS

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Re: Cheap Power Supply
« Reply #1 on: January 03, 2008, 11:21:35 AM »
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Yeah, that's what was running my last layout, the White River and Northern. It's a very handy way to have everything in one box, including some excellent power for IC circuits, which often need very well-filtered 5VDC.

asciibaron

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Re: Cheap Power Supply
« Reply #2 on: January 03, 2008, 12:42:29 PM »
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i use an old server power supply to power bench electronics.  works great and having the negative voltage is kick a$$.  i am planning on using a wall wart from an old modem to power my switch machines. i have a collection of old laptop supplies with 19VDC 2.64A.  each one can power a block if the voltage is dropped down a bit - just need a voltage regulator that can handle 3 amps and 2 caps to limit ripple...  that costs about $3.00.

i love recycling my electronics.



-steve
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