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BIG Capacitors
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From: David Huffman [SMTP:huffman-at-FNAL.GOV]
Sent: Wednesday, February 18, 1998 3:28 PM
To: Tesla List
Subject: Re: BIG Capacitors
You have to use pulse type capacitors for a crusher. I know a 54uF -at- 15KV is
about 8"x15"x30" and weighs 115lbs.
Dave
-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: 'Tesla List' <tesla-at-pupman-dot-com>
Date: Wednesday, February 18, 1998 2:11 PM
Subject: BIG Capacitors
>
>----------
>From: Edward V. Phillips [SMTP:ed-at-alumni.caltech.edu]
>Sent: Tuesday, February 17, 1998 11:54 AM
>To: tesla-at-pupman-dot-com
>Subject: Re: BIG Capacitors
>
>Justin:
>
> Any idea how big a 100 uF 18 kV capacitor would be?
>You can get 4800 ufd 450 volt electrolytic capacitors pretty
>cheaply at swap meets (less than a buck around here). 40 of
>those in series would be 120 ufd at 18 kV, if you could
>equalize the voltages with shunt resistors across each
>capacitor. Since typical leakage is of the order of 2 ma,
>that wouldn't take too much power. I have used one of these
>very successfully in a magnet charger, and think the series
>resistance isn't more than a couple of ohms. Have looked at
>the can crusher page, but can't remember how many turns on
>the primary, so hard to judge what peak current is. This
>may or may not be a foolish idea, but I'm sure discharging
>such a bank would be pretty spectacular.
>
>Ed
>
>
>