Stupid TI power supply

From: Vintage Computer Festival <>
Date: Tue Dec 21 20:01:33 2004

On Wed, 15 Dec 2004, Tom Jennings wrote:

> > > But across which pins??? The power connector on the terminal has three
> > > pins. Which ones want voltage and which one wants ground?
> You can almost certainly figure all this out from you now-smashed
> P.S. Smack it to smaller bits so's you can see how it's
> physically wired. It's even possible thr 3rd pin isn't used,
> tied to one of the others, ground, etc. If there's only two
> wires in the cable, etc.
> I'll try to look at mine tonight.

Ok, I finally got around to figuring out this power supply. I've found
that the center pin on the connector is indeed connected to the center tap
on the transformer, with the outer pins each connected to either end of
the transformer.

There is .3 ohms between the end taps, and .7 ohms between the center tap
and either end tap. So I suppose this means there's 20VAC across the
outer pins and ~10VAC between either outer pin and the center pin?

Sellam Ismail                                        Vintage Computer Festival
International Man of Intrigue and Danger      
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Received on Tue Dec 21 2004 - 20:01:33 GMT

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