I'll make you a benchtop PSU.

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Mario
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I'll make you a benchtop PSU.

Post by Mario » Sat Mar 19, 2011 1:24 pm

It's useful to have a source of different voltages for testing different things. I've made a benchtop power supply out of a computer PSU, and I have three of the same PSU's left over.

I don't have any more banana jacks, but I can buy some more if anybody is interested in one of these. Here's the PSU specs:

100W PSU
+5v, 10A
+12v, 2A
-12v, 300mA
+3.3v, 6A
+5VSB, 800mA (This line is always on, even when the PSU is not)
Dimensions LxWxH - 5x4x2.5" (Not including fan on top)
Auto shut-off with short between any voltage line and ground, or between any of the voltage lines.

I'll attach five banana jacks: one for the +3.3v, +5v, +12, and -12v lines, and one for ground. I'll include a toggle switch in the back to turn it on and off.

I don't mind making these for cheap, I don't need these PSU's. The cost will be shipping + the cost of parts + $5. The only parts I need are the banana jacks and a 10ohm resistor. There are binding posts on eBay for $1.50 plus $4 for shipping. For one PSU, it'd be $8.50. The power resistor is $2 at RadioShack.

So, for one PSU it'd be $16 plus shipping, I suppose. Any takers?

Here's some pictures of the one I built a couple years ago:
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(In this one, the switch on the left is the power switch and the other is to turn the fan on and off. I won't be adding a fan switch, just a power switch. But you can ask for a different color of LED. :wink: )
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Bush
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Re: I'll make you a benchtop PSU.

Post by Bush » Sat Mar 19, 2011 2:24 pm

I'd be interested in one; do you have any idea what shipping might cost?

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Mario
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Location: Sunny California

Re: I'll make you a benchtop PSU.

Post by Mario » Sat Mar 19, 2011 4:00 pm

Shouldn't be much, these don't weigh a lot. Zip code?
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Life of Brian
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Re: I'll make you a benchtop PSU.

Post by Life of Brian » Sun Mar 20, 2011 3:29 pm

I'll take one. PM pending...
dragonhead wrote:sweet. ive spent a third of my life on benheck!
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jaron4103
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Location: greenup ky

Re: I'll make you a benchtop PSU.

Post by jaron4103 » Tue Mar 22, 2011 4:50 pm

ill take one pm me were to send paypal...

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King Kolton9
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Re: I'll make you a benchtop PSU.

Post by King Kolton9 » Wed Mar 23, 2011 2:59 pm

[quote="Mario"]It's useful to have a source of different voltages for testing different things. I've made a benchtop power supply out of a computer PSU, and I have three of the same PSU's left over.
Trade? Can it work on a deminsion L550r?
Ever heard the saying "Half full, or half empty?"
Well, If you measure the cup, and put a line in the middle, and fill to the line, it's half full, but If you fill it to the top, and drink to the line it's half empty!

dsv101
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Re: I'll make you a benchtop PSU.

Post by dsv101 » Wed Mar 23, 2011 3:45 pm

are you willing to do trades?

i don't have cash but i would like one if 5v is enough to power a ps1 screen.

http://forums.benheck.com/viewtopic.php ... 25&start=0" onclick="window.open(this.href);return false; <---my trade thread

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