[Milsurplus] BC-348 PSU questions

[Kenneth G. Gordon]

On 28 Sep 2015 at 7:45, Ian Wilson wrote:

> There is clearly something odd about the transformer and/or the wiring
> in the PSU (this is an existing addition that I am rebuilding).
> 
> Measuring resistances between the two hot wires (diodes removed from
> circuit for the moment) and the centre tap, I see wildly different values
> (360ohm and 60ohm).

Yow! I hadn't thought of that!

> That can't be good.

Nice use of minimal expression of a major problem. ;-)

> Perhaps there's an internal
> short somewhere.

Duh! Or a partial open...most probably a short.

> 
> Going to scrap the transformer and choke (which also has issues) and
> see what happens when I connect an external PSU that I know works OK
> with BC-348's.

Excellent idea, Ian. Carry on.

Ken W7EKB