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Tube power supply caps.
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Old 27th October 2021, 01:36 AM   #1
GregH2 is offline GregH2  Australia
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Default Tube power supply caps.

Hi All,

Do these capacitors look ok for use as the primary (post rectifier) cap in a tube power supply? They look suspiciously like motor run caps but aren't marketed that way. Current ratings look to be quite high.

Appreciate any thoughts!

Greg
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Old 27th October 2021, 10:47 AM   #2
Cagomat is offline Cagomat  Germany
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These capacitors are no motorruns, but top notch for filter applications
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Old 27th October 2021, 12:50 PM   #3
GregH2 is offline GregH2  Australia
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Excellent, thanks!
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Old 27th October 2021, 10:05 PM   #4
egellings is offline egellings  United States
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They would work just fine, although they could be quite a bit better than you need. They are not cheap, either.
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Old 28th October 2021, 02:21 PM   #5
GregH2 is offline GregH2  Australia
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Excellent, thanks for that. Not cheap but I would only be using one!
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Old 28th October 2021, 04:41 PM   #6
indianajo is offline indianajo  United States
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I used a pair of similar 47 uf 500 vac film caps from genelec for B+ supply in my H182 organ. Were rated for motor use. I'm tired of replacing electrolytic caps every 8 years. Were so big I had to mount them in a separate chassis. No problem. Ran a 600 v rated twinax cable to them, + versus return. Its been 11 years since I installed them.
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Old 31st October 2021, 12:45 AM   #7
mdpaudio is offline mdpaudio  United States
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Check out Apex Jr on the auction site. He has 75uf 600v polypropylene film caps for &5 each! I use them on my B+ Supplies.
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Old 31st October 2021, 02:46 AM   #8
GregH2 is offline GregH2  Australia
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Thanks for the replies everyone!

Will check out those Apex caps too.
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Old 31st October 2021, 03:54 AM   #9
wg_ski is offline wg_ski  United States
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Quote:
Originally Posted by Cagomat View Post
These capacitors are no motorruns, but top notch for filter applications
They could certainly be used for motor runs, but are rated higher current for general purpose filtering. Would be a nice find if you found some surplus, cost a pretty penny at regular price. They’d never need replacement, even in highly stressful use.
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Old 31st October 2021, 02:14 PM   #10
kodabmx is offline kodabmx  Canada
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Tube power supply caps.
Too easy?
Ymin | Ymin LKMJ3552H101MF | Aluminum Electrolytic Capacitors - Leaded - LCSC.COM

https://datasheet.lcsc.com/lcsc/1912...MF_C443409.pdf
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