[neonixie-l] Cheap isolation transformer

[chuck richards]

Sure that works. I have right now a 5 volt and 170 volt
simple dual power supply operating that uses that idea.

Added a zener-shunt regulator to the 170 v output.

Look at http://www.mpja.com

See their power transformers.

Each has two primary windings for the purpose of operating
from 110 or 220 v. But, you can mix and match those windings
to make it do some unorthodox things, for quite cheap money.

Just get a variety of them, then keep track of how warm
or cool they run, and use your head when it comes to loading.
Lots of possibilities there, just don't burn 'em up or
start a fire, and you'll be fine!

Chuck



---- Original Message ----
From: greg...@hotmail.com
To: neoni...@googlegroups.com
Subject: [POSSIBLE SPAM] [neonixie-l] Cheap isolation transformer
Date: Sat, 3 May 2014 13:16:31 -0700 (PDT)

>Has anyone encountered problems using a transformer with dual primary
>
>windings as an isolation transformer ? I'm only powering 1 primary,
>and
>using the other primary "as a secondary winding" to provide isolated
>120VAC. I've chosen a larger unit so that I wont exceed (or even get
>close
>to) the VA rating.
>
>I know I wont get the same degree of isolation as the real thing, but
>
>that's not important for me.
>
>My actual project requires 3 isolated windings in 1 unit, so a
>commonly
>available dual-primary/dual-secondary transformer looks like a
>perfect fit.
>
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