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Re: Re[2]: Awesome Quarter Shrinking Capacitors on EBAY
Original poster: Tesla729-at-cs-dot-com
In a message dated 10/3/03 4:09:17 PM Pacific Daylight Time,
tesla-at-pupman-dot-com writes:
>Mike Poulton Wrote:
> >Original poster: Jim Lux <jimlux-at-earthlink-dot-net>
>
> >At 03:47 PM 10/3/2003 -0600, you wrote:
> >>Original poster: John <fireba8104-at-yahoo-dot-com>
> >>I have a 0.004F cap rated at 4000VAC (32,000 jolues) that is only a bit
> >>smaller than my simpson 260 multimeter.
>
> >That's 32 millijoules, not 32kJ... .004 * 4*4/2 = 32E-3...
>
>The lack of a "u" before the "F" there was apparently intentional. A
>0.004 farad capacitor at 4kV is 32kJ indeed.
>Original poster: Yurtle Turtle <yurtle_t-at-yahoo-dot-com>
>But considering that I got two 10/100 Maxwell's for a
>total of 10 kJ for less than one of his, I'd have to
>stick with my comment. I've seen bargains better than
>I got as well.
>
>http://www.hot-streamer-dot-com/adam/garage/100_mF_10kV_Maxwells1.jpg
>
>http://www.hot-streamer-dot-com/adam/garage/100_mF_10kV_Maxwells2.jpg
>
>Adam
>
Hi Jim, Mike, Adam,
Yea, I noticed the absent "u" as well in the original post, but
32 "kilo" J cap in a package that's physically smaller than a Simp-
son 260 multimeter? I didn't know that capacitor energy densi-
ty technology had progressed that far, even in late 2003. So
I still wonder if there was a misprint in the original "4000 VAC
.004 F cap" post ;^/
I also have a couple of 10 kV, 100 uFD energy discharge caps:
one an orange painted Maxwell just like Adam's, the other a
gray painted NWL, otherwise they are identical in size, rating, and weight.
About 24"x14"x7" thick and 140 lbs. each. I picked up the Maxwell
on the same lot that Adam got his two and picked up the NWL a
few months later for an even better deal than the Maxwell. All in
all, I have a 280 lb., 10 kJ quarter shrinking/can crushing capacitor
bank for less than $550, including the shipping/freight charges.
So, as Adam stated, $400 for a 10 kV, 62 uFD cap is not a GREAT
deal.
David Rieben