[GreenKeys] KS-5928 L7 loop supply?

[Nick England]

Yep - not a selenium rectifier stack. Likely to be silicon.

Looks like a ferroresonant transformer with the oil cap across it.
Can't hurt to bring it up on a variac to reform the big capacitor.

I found a reference saying KS-5928 is a standard 800ma loop supply used
with M19.

I second Bruce's motion about sticking on a standard 3-wire power cord.

Nick England K4NYW
www.navy-radio.com


On Fri, Nov 25, 2022 at 7:31 PM John W9DDD <w9ddd at tapr.org> wrote:

> That stack probably is germanium diodes based on vintage.  I have stack
> that looks like that, but I think slightly smaller.  I also have a WU 9100
> wiring cabinet with one of those in it.  Does this say GE on it?
>
> John, W9DDD
>
>
> On Nov 25, 2022, at 5:38 PM, W2HX <w2hx at w2hx.com> wrote:
>
> Hi friends. Found this loop supply in a closet. Anyone recognize it? The
> AC input plug looks WEIRD! Does not appear to be the same pitch as a
> regular 2-prong AC plug. Anyone know what it is supposed to plug into?
> Also, I think this has a selenium stack. Leave as is? See pix (cover
> removed for the photo).
>
>
>
> https://w2hx.com/?prefix=x/TTY/KS-5928/
>
>
>
> I am guessing, but would like your input) that the oil filled cap is
> probably ok but the big electrolytic should be reformed? Or replaced?
>
>
>
> Comments/suggestions?
>
>
>
> 73 Eugene W2HX
> Subscribe to my Youtube Channel: https://www.youtube.com/@w2hx/videos
>
>
>
>
>
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