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 Post subject: What is V.S.P AND W.V.D.C. on a big red polarized cap?
PostPosted: Oct Sun 18, 2020 4:22 am 
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Location: Little Rock, Arkansas
What do the specs mean and what year was this cap installed on this 1946 Crosley 86cs? Thank you

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These pics are being rotated counterclockwise for some reason??? Late night mystery pics.

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 Post subject: Re: What is V.S.P AND W.V.D.C. on a big red polarized cap?
PostPosted: Oct Sun 18, 2020 5:36 am 
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V.S.P. is a new one on me, but W.V.D.C. is Working Volts DC. It's the maximum voltage the cap can handle. When you are replacing them, that's what you need to look for. You can always go higher, but be careful going lower, as in I wouldn't. You don't want to go lower than what the circuit will have on it, along with a safety margin. What you might run into is where the circuit is say 350 volts, and all they had around were 500's. You could find a 400 volt cap and use it. Or the other situation is the cap was replaced along the way with one that had a higher voltage rating than the original. The safest bet is to just go with the same rating as what's there now.

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 Post subject: Re: What is V.S.P AND W.V.D.C. on a big red polarized cap?
PostPosted: Oct Sun 18, 2020 1:53 pm 
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Location: Sunbury, Ohio 43074
V.S.P, by my educated (slightly) and researched (even more slightly) guess, would be Volts Supply Peak. I can't find a lot about it out there but it is probably a maximum peak, surge, or ripple rating. I don't recall ever seeing it before.

I'm SURE however someone here has, and will prove my guess to be wrong. :oops: :mrgreen:

EDIT: I knew I'd seen it somewhere before .. sheesh!! https://antiqueradios.com/forums/viewtopic.php?f=19&t=382218

Use a 600V cap and I'm sure you will be OK.

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 Post subject: Re: What is V.S.P AND W.V.D.C. on a big red polarized cap?
PostPosted: Oct Sun 18, 2020 3:53 pm 
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Joined: Jan Tue 16, 2007 7:02 am
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Location: Lexington, KY USA
See prior thread on same radio:
https://antiqueradios.com/forums/viewto ... w=previous
The moderators may come at you with their wet noodle.

The "S" no doubt stands for "surge". The 525 number is for a short term maximum voltage for this capacitor.

This is likely not the original capacitor. You might want to discover the ratings for the original part.

What year? Safe to say the cap is out of warranty. The "RA" may be a date code?

The Rider service info is here:

http://www.nostalgiaair.org/pagesbymode ... 003646.pdf

The parts list says this is part of a multi-section can and is rated at 400VDC, at the most.

However, the voltage chart lists 340VDC B+ at the 5Y3 rectifier. You can expect over 400V on the first filter cap during warm-up.

A 450V rated capacitor is probably OK, but I would look for a name brand cap with really good ratings for life, temperature and ripple current.

Ted


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 Post subject: Re: What is V.S.P AND W.V.D.C. on a big red polarized cap?
PostPosted: Oct Mon 19, 2020 12:36 am 
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Joined: Mar Tue 17, 2020 11:03 pm
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Found one of those red Planet's in my 64 reacquired
Deluxe Reverb on the bias supply, wondered too.


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 Post subject: Re: What is V.S.P AND W.V.D.C. on a big red polarized cap?
PostPosted: Oct Mon 19, 2020 3:06 am 
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Location: Little Rock, Arkansas
I see why my search didnt get a old thread hit...VSP instead of V.S.P..etc

"Probably hasn't been serviced in 50 years, those red Planet brand electrolytics are replacements, that's the style they had in the mid-late 50's. Amazing that they still work, that was not one of the better brands of caps for durability."--this old thread solves the when factor. Also, found some vintage advertisements from Planet Sales Corp. , Bloomsfield NJ. From 1956 to 1965. Here's a pdf link to their sales list if anybody's interested.

https://www.technicalaudio.com/pdf/Elec ... _Extracts/

Just scroll down to the pdf -Planet_Sales_Corp...and click.

I love wet noodles as long as they are spicy :)) Ha!

Thanks for all y'alls interest! :)

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"Certified Rocket Scientist -according to my boss."


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 Post subject: Re: What is V.S.P AND W.V.D.C. on a big red polarized cap?
PostPosted: Oct Mon 19, 2020 5:24 pm 
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Location: Beaver Falls, PA. USA
I remember buying that brand of electrolytic capacitor in the 1960s; my local parts distributor carried them, along with Sprague. They did supply the OEM market at one time.

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