S-100 Power Supplies: thanks!

From: Don Maslin <donm_at_cts.com>
Date: Wed Aug 29 14:02:59 2001

On Wed, 29 Aug 2001, Rich Beaudry wrote:

> Date: Tue, 28 Aug 2001 21:53:29 +0100 (BST)
> From: ard_at_p850ug1.demon.co.uk (Tony Duell)
> Subject: Re: S-100 Power Supplies: thanks!
>
> >Have you considered winding your own transformer.
>
> Uhhh ... hadn't thought of that! :-)
>
> > In the UK we can buy 'transformer kits'.
>
> Did a quick search of a couple of distributors, but no luck yet ... I'll
> keep looking, though!
>
> >According to my calculator, 6.3V * sqrt(2) = 8.9V or thereabouts. Since
> >the 8V line is unregulated anyway, I would think you could start with a
> >6.3V transformer. Can you really no longer buy valve heater transformers???
>
> !_at_$#!@$!!~!!!!
>
> I found a couple of 6.3V transformers, one at 8.8A, one at 12A ... I must be
> going blind... I don't think they'd power my 21-slot backplane, but I do
> have a couple of smaller ones that would probably be just fine...
>
> Rich B.

If you get one of those, Rich, get it on a returnable basis. Some S-100
cards are really picky about the voltage that the regulator chip sees
and if not high enough will not function.

                                                 - don
Received on Wed Aug 29 2001 - 14:02:59 BST