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4hv.org :: Forums :: General Science and Electronics
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Help identifying stud diodes and capacitor?

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benbmw
Sun Dec 13 2015, 04:29AM Print
benbmw Registered Member #55052 Joined: Thu May 14 2015, 06:47PM
Location:
Posts: 12
Hey guys, I was looking through a salvage yard earlier today and came across some stud diodes and what looks like a large capacitor or transformer. I think the diodes are Westinghouse but googling the numbers on the side doesn't turn up anything. The capacitor has no markings or plates on it. It seemed to be part of a larger setup which had another similarly sized unmarked box with two ceramic standoffs and two cables coming straight out of the top. Does anyone have an idea about what the ratings of these diodes would be? Also there were several of these 500w isolation transformers that were taken from an airfield's lighting system. Would they be worth anything? Here is the album with all the pictures: Link2

Thanks,
Ben
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Patrick
Sun Dec 13 2015, 08:28PM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
I don't like the look of those insulators. Please make me feel better, and be careful with possible PCB exposure issues.


westinghouse DIODES 37-8596649 HS I cant find anything on this, or a derivation.
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benbmw
Sun Dec 13 2015, 08:42PM
benbmw Registered Member #55052 Joined: Thu May 14 2015, 06:47PM
Location:
Posts: 12
Yeah I am not considering taking the capacitor since I have no information on it, and it appeared to be leaking something with the consistency of tar. Is there any way I could test the diodes without damaging them to get an idea of what their ratings might be?
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Patrick
Sun Dec 13 2015, 08:48PM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
well that's always the problem. when we salvage components, we save money, but it costs us in unkown specs.

I guess id put a DC reverse bias on the diode the sacrifice one. I don't see any other way to determine reverse voltage.
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Ash Small
Mon Dec 14 2015, 10:13PM
Ash Small Registered Member #3414 Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
You might get some idea from the forward voltage drop. I don't know how reliable this would be though
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radiotech
Thu Dec 17 2015, 06:59AM
radiotech Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
Your diodes may be some shown here under a house number. If you look at your diodes,
note the direction of the diode symbol. In bridge configurations, half the diodes may be R or reversed,
in which case the stud is anode. The symbol will then be opposite to that in your photo.

Be careful of junkyard dogs, while you are prowling high scrap value metal
heaps.
1450335552 2463 FT174325 Westinghouse From 1963
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