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Old 25th May 2004, 11:38 PM   #31
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Quote:
Originally posted by fdegrove

Indeed, I did.
For non-boutique caps they're among the best you can get in MKP.
Jadis uses them and I'm sure other branders have wound their wrappers around them too.

Unfortunately I can only get them in small values (~0.100F) and high voltages (~1000VDC+).

Aha, seems we have a better selection here then. I can get
MPWR type upt to 1.0uF in 160 and 630V versions and the
1% MPL type up to 4.7uFin 160V. I can also get 160V Evox
Rifa up to 15uF.
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Old 25th May 2004, 11:42 PM   #32
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Hi,

Quote:
Aha, seems we have a better selection here then.
Elfa?

Cheers,
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Old 25th May 2004, 11:45 PM   #33
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Quote:
Originally posted by fdegrove
Hi,



Elfa?
Yes. Want me to buy some for you?
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Old 25th May 2004, 11:52 PM   #34
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Hi,

Quote:
Yes. Want me to buy some for you?
Thanks for the kind offer, Christer...

Not yet, I'm still too busy for the coming months upgrading my current stuff to think about cooking up something new...

Tell you what though, I'll definetely build a new phono preamp with not a single electrolytic cap in sight....
Unfortunately it WILL cost me an arm and a leg to get it where I want it.

Ciao,
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Old 26th May 2004, 12:18 AM   #35
Magura is offline Magura  Denmark
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You want big film caps...here you go

http://www.avxcorp.com/docs/Catalogs/capafim.pdf

Magura
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Old 26th May 2004, 12:21 AM   #36
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Quote:
Originally posted by Magura
You want big film caps...here you go

http://www.avxcorp.com/docs/Catalogs/capafim.pdf

Magura
I may be wrong, but I think the ones I meant were even bigger,
but not as high voltage.
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Old 26th May 2004, 12:27 AM   #37
CRFX is offline CRFX  United States
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a 3 foot tall capacitor?!?! for only 1000uf, did I read wrong?
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Old 26th May 2004, 12:29 AM   #38
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Hi,

Quote:
a 3 foot tall capacitor?!?! for only 1000uf, did I read wrong?
Right or wrong...you may just as well use batteries...
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Old 26th May 2004, 02:20 AM   #39
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I thought AVX's glass capacitors were interesting, too.

Available in similar range to silver mica, extremely low
DF and DA and virtually impervious to anything including
the sort of radiation you'd find in reactor cores.

From what I see in the Allied catalog, they're VERY expensive.
I have no idea what 'sound' they'd have, if any. Sort of like bulk foil resistors, but much more costly. Best left to your
scientific sample-and-hold instrumentation, I suppose.
I don't believe I will be using them in any amplifier bypass
cap locations, or even in the feedback loop.

http://www.avxcorp.com/docs/Catalogs/ck31-32.pdf

I have several 100 uF @2200 V caps sitting around that
are probably polypropylene/paper? in oil, originally used for
defibrillators. Planning to use them in a tube amp power
supply. I think my source has some more, at $25 apiece.
They're slightly larger than the biggest multi-section 'lytic
you see on many tube amp chassis.

For the really exotic, you might consider carbon aerogel
supercaps. Have to stack a number in series to get the
required voltage, though.
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Old 26th May 2004, 08:07 AM   #40
Jay is offline Jay  Indonesia
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Quote:
Originally posted by janneman

That's completely new for me! Can you explain this?
To smooth the DC you need to do something. This something you do that harm the transient. You don't need to think that I'm talking about voltage ripples or something. When I said "transient", it is more a "quality" that is known to my ears. This transient-or-noise, is the major trade-off in power supply.
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