Re: Urgent mmc advice

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Mark Broker <mbroker-at-thegeekgroup-dot-org> 

Terry, now I see it...  doh!  :)

Ditto what terry said.  Also, the 940s as far as I know are a polyester and 
polypropylene hybrid dielectric.  That fact isn't mentioned in the 
description but is depicted in the "cross-section" on the PDF datasheet.

The 5A rating is actually incorrect.  The latest testing shows something 
like 11A RMS (Terry's site says 8A, but the lastest tests show closer to 
11A) with a 15C temp rise at 350kHz.  We have no idea how CDE tests their 
caps internal to teh company for ratings, so we prefer to use the results 
of Terry's independent testing.  I will also say that I have only 
encountered non-overvolted MMC designs that exceed the temp rise (RMS 
current) margin on LTR designs at high break rates using "our" caps.

http://www.thegeekgroup-dot-org/mmc

Even the eminent Dr. Resonance uses and recommends our caps....  just in 
case you think I'm trying to play the pushy salesman ;)

Cheers!

Mark Broker
Chief Engineer, The Geek Group

On Wed, 08 Oct 2003 18:12:23 -0600, Tesla list <tesla-at-pupman-dot-com> wrote:

>Original poster: "Herbaleta d.o.o" <herbaleta-at-herbaleta.hr> I would use 
>these caps 940C20W1K SNUBBER CAPACITOR Cornell Dubilier 2,000 630 1 5 19.8 
>1.614 - 2.126 - IN STOCK ! 19.8 is RMS current ( that geekgroup have only 
>5 A)! They are 1000 nF! I would use 28 in series for 56 000 Vdc, 17640 AC 
>for 35 nf! Could anybody verify is this good? Are caps good?! Order would 
>be From Richardson electronic