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Re: Anyone use MMC's with their pole transformers???????????
Original poster: "Finn Hammer by way of Terry Fritz <twftesla-at-qwest-dot-net>" <f-h-at-c.dk>
Here are a couple of ways that the MMC cap beats the "Commercial" cap,
but let`s not forget that the individual caps in an MMC are _very_
professional in the first place!
The development of the MMC, the way we design them, and what lifetime to
expect from them, is the result of a collective effort, which is still
going on. (But Terry did most of it). You could call an MMC "The LINUX"
of Capacitors. With an MMC, the average member of this list knows what
to expect performance and lifetimewise.
The MMC originates from the hobby world, where parttakers "only" have
reputation and honour to loose.
The commercial caps are in the realm of the - you know- commersial
world, where money and careers are at stake. A much more closed society.
Fair enough, btw.
The cap that I made 3 years ago, and which smoked a litle while ago, was
examined by Terry and Scott Hanson, both failure mode Engineers. This
one goes to Scott: He made a rapport, with pictures, documenting that
the fire originated outside of the caps, and showed how the caps self
heal, even at outrageous overvolting.
This report will be made public soon, and will contain some handy info,
on how _not_ to physically construct and arrange the strings.
If you blow a cap in a string, the other strings are still good, and can
be reused for other purposes.
A replacement cap for the above mentioned one is under construction:
individual caps, KP/MMKP 376 1600 VDC 68 nF, from BC-Components (former
Phillips) will be arranged in strings with 30 caps in each string, 15
strings. 450 caps -at- 50 cents apiece = 225 USD.
That cap wil be indestructible, as it should be for a Museum coil.
Asking General Atomichs (former Maxwel) what they`d suggest, they comeup
with a cap no. Maxwell #35309 and it costs 1400 USD, so there is still a
good margin for assembling the MMC.
In a pro show buisness world like the one you work in, it is possibly
best to just order a Maxwell, or whatever cap, and a spare one for
safety, but the hobbyist will surely get more bang for the buck, at
equal performance, with an MMC.
Cheers, Finn Hammer
Tesla list wrote:
> Original poster: "Jeff W. Parisse by way of Terry Fritz
> Far more capable in what way?