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Old 17th May 2003, 10:11 AM   #1
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Default Russian oil caps ?

Hi all,

I would like to tap into the expertise of the members of this forum, not being all that knowledgeable myself.
In searching for a couple of paper in oil caps I came across the offerings of mr. Tony Welsh esq.
What I would like to know is, are these russian oil caps he's selling just as good as / much better than / wouldn't use them if they gave 'em away for free compared to the "established" caps by Cornell D., Sangamo, Aerovos, etc.?

Any help would be greatly appreciated.

Martin
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Old 17th May 2003, 10:37 AM   #2
dhaen is offline dhaen  Europe
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Martin,

I've used the Russian capacitors from Tony Welsh. They seem fine to me. I can't compare them with "boutique caps" as I don't use them.
The finish is dipped paint (which tends to flake), and is probably less atractive than many western types, but perfectly adequate for under-chassis work.
Be aware that some are rated at AC voltage, and others at DC.
The AC caps should be useable up to 1.4 x the ratings with DC, though presonally I would treat that as a "surge rating" - perhaps during warm-up time etc.

Cheers,
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Old 17th May 2003, 07:05 PM   #3
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Thanks John, the ones I saw were rated 630 V, so it should be ok either way.

cheers

Martin
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Old 18th May 2003, 08:41 AM   #4
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Just curious: why use oil caps at all?
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Old 18th May 2003, 01:39 PM   #5
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Default the voice of inexperience

Quote:
Originally posted by analog_sa
Just curious: why use oil caps at all?
Because they're in the schematics and I'm not experienced enough to start fiddling with substitutes.

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Old 18th May 2003, 05:53 PM   #6
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The type of dielectric is only a question of taste; don't be afraid to experiment. Oil caps in my experience have the sonic transparency of a wet blanket although apparently many people like them.


cheers

peter
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Old 18th May 2003, 07:51 PM   #7
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Default OIL.

Hi,

Peter,

I think Martin uses them as PSU caps.
Still wet and oily but not so blanketty....

Ciao,
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Old 18th May 2003, 08:05 PM   #8
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Default olie

Ah, yes, sorry, the ones I was talking about are 8 uF / 630 V and definitely for the PSU
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Old 18th May 2003, 11:34 PM   #9
EC8010 is offline EC8010  United Kingdom
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Default More details?

It's all about where you use things. I have amplifiers with polypropylene power supply capacitors, and others with electrolytics. Can you give a few details about your proposed application?
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Old 18th May 2003, 11:42 PM   #10
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Default Spijkers Op Laag Water...

Hi,

Nothing wrong with it...just some app missunderstandings.

And yes, as usual...horsies for coursies,

Know thy component and thy'll know thyself?

Cheers,
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