What can I do with this power supply?

Mark42

Fleet Admiral
Joined
Oct 8, 2003
Messages
9,334
Just got a power supply from a server at work. Darn thing is rated 42 amps at 5 V. That's some serious low voltage output!

I know how to get the power supply to engage by grounding the gray wire, and probably have to put a load resistor across the 3.3 or 5v to keep it engaged once powered up.

This is a great source of some high amperage in the +3.3, +5.0, +12.0, and even has low (less than one amp) in the -5.0 and -12.0 range.

Do you think that sort of voltage/amperage will work to do small fine wire spot welding? Like on electronics that can't be soldered due to heat dissipation and buildup? Was thinking that a simple spot weld would work in a few instances of electronics I have.

What do you think about this idea before I fry something?
 

j_martin

Admiral
Joined
Sep 22, 2006
Messages
7,474
Re: What can I do with this power supply?

I haven't seen any electronics since about 1970 that can't be soldered. The original germanium semiconductors were touchy. Proper tools, technique, solder (eutectic) and flux are the key.

Hint, I have about 80 bucks in my soldering pencil, and over 400 in my desoldering station.

What do I think? It's an ATX power supply, not an arc welder.
 

jtmarten

Master Chief Petty Officer
Joined
Aug 2, 2004
Messages
825
Re: What can I do with this power supply?

If you had two of them to run in series you could fire up the flux capacitor.
 
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