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Re: [TCML] Ebay I tems

Jim, Paul -

Per the Maxwell datasheet, the "rated" voltage reversal is 15%.
Peak current rating is 25k Amps;
RMS current rating is 20 Amps;
Maximum continuous rep rate is 500 PPS;
Maximum dissipation factor is .20% at room temperature;
Design life at 30kV, 15% voltage reversal is 10E9 shots.

Herr Zapp

----- Original Message ----- From: "Jim Mora" <wavetuner@xxxxxxxxx>
To: "'Tesla Coil Mailing List'" <tesla@xxxxxxxxxx>
Sent: Monday, October 12, 2009 10:24 PM
Subject: RE: [TCML] Ebay I tems

Hey Paul,

They have a 20% voltage reversal as I recall. 2 In series gives us 70KV 20%
gives us a usable >14KV.
This has been on the list many times!

Jim Mora

I use 2 in series for my 4" coil just fine at ~120PPS

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Paul Brodie
Sent: Monday, October 12, 2009 2:08 PM
To: Tesla Coil Mailing List
Subject: Re: [TCML] Ebay I tems

I don't mean to hurt your sales effort or anything but I have owned several of the Maxwell caps and discovered some problems with using them with Tesla

They have a relatively low duty cycle and there have been at least a couple of coilers who have suffered catastrphic failures using these caps. You can search the archives because there was a thread that discussed this at length

about 3, maybe 4 years back. One person, I can not remember his name,
unfortunately, who had his fail and he went to the trouble of disassembling
it and taking photos of what had been destroyed.

If I remember correctly, his solution was to use 2 of them in series to get
.015uF and 70kV to use with a 15kV 30mA neon sign transformer. I can not
remember any other of the details now. I will try to find it in the archive
and pass along what I find. I thought everyone should be aware of this. I
seem to remember also that Mr. D.C. Cox was involved in that discussion, if
he cares to comment. That is if I'm not wrong, AGAIN! :-) My memory is
pretty foggy these days but I am fairly certain he at least made some
comments during that discussion.

This is not to knock these caps at all. I recently sold two of them on eBay
myself. Apparently, they are a perfect fit for high voltage flash
photography and Kirlian photography as this was the application the buyer
was using them for. They are definitely pulse discharge caps and good to
35kV. It is only the duty cycle that I am aware of that presents any
problems, which leads me to wonder why using 2 of them in series helped??
Think Positive

----- Original Message ----- From: Gates Larocque
To: Tesla List
Sent: Monday, October 12, 2009 13:14
Subject: [TCML] Ebay I tems

Hey gang I'm selling a few Items on ebay please take a look.

Maxwell pulse cap.

RK:MESELX:ITHv resistors 4 of
me=STRK:MESELX:ITSSTC spark gap board I have a second board no components.
somewhere and iffoud will be included to buyer for
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