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#Post#: 214--------------------------------------------------
$2 DIY Bench Power Supply
By: JohnnyMac Date: March 22, 2013, 1:29 pm
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I recently received my Imax B8+ charger and have been trying to
get a 12v power supply ready for it. Since I could also use a
decent bench supply for other voltages I figured I'd go the
usual route (cheapest) and make my own. I finally got the last
of the needed parts yesterday so I began the assembly. All that
is left to do is complete the internal wiring and that will
happen tonight.
I am using an old computer power supply (psu) for the internals.
This will provide me with 12v, 7v, 5v and 3v supply. I found a
cigar box (free from my local cigar shop) the perfect size to
just fit the psu along with some external fan grills I had in
the basement, a master switch ($1), and a speaker connector
panel I picked up at Radio Shack on clearance for $0.87). Total
investment? $2
Here it is so far:
HTML http://farm9.staticflickr.com/8522/8578216615_921e87c8d2_c.jpg
HTML http://farm9.staticflickr.com/8238/8579318140_6faca8a42a_c.jpg
HTML http://farm9.staticflickr.com/8520/8578215413_4da584943f_c.jpg
HTML http://farm9.staticflickr.com/8527/8579316988_5cbc31a57d_c.jpg
On the inside it looks like this. Just remember that the wiring
is not completed and will be greatly cleaned up inside:
HTML http://farm9.staticflickr.com/8386/8579319550_36f30349f6_c.jpg
HTML http://farm9.staticflickr.com/8386/8579320146_5c6387e8c7_c.jpg
Pretty darned wesome what $2 can still buy these days!
HTML http://farm9.staticflickr.com/8099/8579316476_d61a14d6a9_c.jpg
Johnny
#Post#: 215--------------------------------------------------
Re: $2 DIY Bench Power Supply
By: Spasmod Date: March 22, 2013, 5:17 pm
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That is a fantastic bit of ingenuity and engineering Johnny.
That cigar box works perfectly too and even has the health
warning still on. Love it !! :)
I did something similar (leaving it in it's own case though)
with a PC PSU for a +12v supply.
It kept turning itself off! that's when I realised you need a
load on the +5v rail lol.
All works fine now :D
Thanks for sharing.. Very nice work
#Post#: 309--------------------------------------------------
Re: $2 DIY Bench Power Supply
By: Chicago X Date: April 1, 2013, 11:12 am
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This build is so cool; I love how everything fit together so
nicely.
I would assemble one myself, but Wifey has forbidden me to make
anything with mains power after the last, um, incident.
#Post#: 652--------------------------------------------------
Re: $2 DIY Bench Power Supply
By: MRsDNF Date: April 17, 2013, 5:51 am
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I love this build JohnnyMac and have read it a dozen times. I've
a brand new Thermaltake 600 watt power supply here l bought for
a PC repair and never used. I'm not sure whether to attempt your
mod to use on my hobby charger in the off chance l wont bugger
it or keep it for testing.
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