[Milsurplus] Re: [The WS No19] Transformer rewinding :=(((

[J. Forster]

I'd really like to find out why these things fail. Could you, and anyone else
who has a blown one, please measure the DC resistance of the various windings?
Specifically, I'd like to know the resistance between the following terminal
pairs:

1 & 2

3 & 25
25 & 5

21 & 19
19 & 22

23 & 13
13 & 24

10 & 12

8 & 9

7 & 20

6 & 14

If possible, I'd prefer measurements without the 6X5s in their sockets, but that
is not essential. I'd also like a set of measurements on a known good unit.
Rather than clutter up the lists, please email me the measurements directly.

Maybe we can figure out how to save these puppies.

Thanks,
-John


WF2U wrote:

> Welcome to the club, John...
>
> These transformers and inductors potted in the case are very fragile and
> most of them you'll find blown one way or another in those AC PSU's.
> I have one supply (in beautiful cosmetic shape) DOA with a short in the LV
> winding. I initially suspected the selenium stack but it's OK.
> My other AC supply looks rough outside, but it works. I