[sdiy] isolation transformer from a transient supressor

[mike ruberto]

Most of the larger copy machines from yesteryear had big 15 amp
isolation transformers built into them. I built and isolation box from
a Savin copier transformer once and it worked great.

This transformer I used was about 20 pounds. Very heavy customer. If
the one your looking at isn't this big then it may just be a choke.
If it is an isolation transformer be sure to load test it before
building a project around it. Put a fuse on it's input and a circuit
breaker on it's output along with some transient suppressors and you
should be alright.

M. A. Ruberto

On Nov 16, 2007 7:37 PM, anthony <aankrom at bluemarble.net> wrote:
> I got this voltage transient supprossor at a flea market that was obviously
> intended for a compy machine since there's a little copy machine icon beside
> the the Ac outlets on the box. I bought it for the box and started to
> desolder the board willy-nilly because there were some nice big
> polypropylene caps on there. I know I don't want the full functionality of
> this suppressor - part of which consists of a relay that switches out the
> power in case of a bad spike, but I became curious about a part on the board
> that at first looked like some sort of choke coil, but upon further
> inspection it looks like a high-current 1:1 isolation transformer. It
> consists of two coils of heavy-guage co-pper strap on each side of a
> recangular laminated core. So I thought about rebuiliding the box partially
> using just the isolation transformer if that is indeed what it is. I thought
> I might either use it to hook up a coupel of my Variacs (Powerstats
> actually) - since those buggers don't isolate the line current - for safer
> testing. It's pretty compact though I may just use it in one of my guitar
> amps that I was going to use 2 transformers in step-down-step-up
> configuration. But if the circuit breaker on the box is any indication -
> this thing can handle 15 amps. More than even a Marshal Major would need.
>
>
> cheers,
> aa
>
>
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