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@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@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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