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20amps at 12volts, What to do with it? Answered

From taking down the halogen lights in the kitchen I'm left with a 250W transformer that outputs 12V, which I somehow took around 20amps to be, that's just using the first calculator I found...

I was wondering what to do with it, it's got a couple of projects to be attacked with, kind of scary evil ones involving high amperages through unsuspecting materials...

However, could I spot weld with it, I mean really thin pieces of metal, not to mention what else could I do with it. It's a well made transformer that doesn't overheat easily, has a nice tough casing and handy mounting points... 

So I kept it in the, I'll do something with that spot... 

4 Replies

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seandogue (author)2010-05-12

Nice thing is, even if you don't use it right away, it will be great for powering alot of low voltage, high torque motors, heaters, fast battery chargers, and a bunch of other things I can't think of at this moment. (could also test your very own AC inverter design!)

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Callum Snowden (author)seandogue2010-07-10

Yeah but would'nt you want a lower current power supply for that so in case any components fail, they dont shoot of the PCB like miniature rockets... :)

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seandogue (author)Callum Snowden2010-07-11

Well sure, but that can be accomplished with secondary circuitry. the supply is the crucial source... Without that, ain't nothin possible.

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chriskarr (author)2010-05-13

Recommendation - Use the transformer as a supply for a switch-mode topology circuit (perhaps half-bridge, if you think you're up-to-it) and drive a self-made ferrite transformer for (if you want to weld) 2V @ ~125A, or, make a step-up transformer for some ridiculously-high voltage AC/DC experiments, like lifters or voltage multiplier cascades.

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