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From: Winfield Hill
Subject: Re: Capacitors for high current high voltage pulse
Date: 3 Nov 2002 07:03:58 -0800
Organization: Rowland Institute
X-Newsreader: Direct Read News 4.00
Darrell Harmon email@example.com wrote...
> George R. Gonzalez wrote ...
>> BTW can you really discharge this big a cap in 300nsec? Wow.
> Thats my goal. I am probably very optimistic, although someone else
> has done 1.4uS with a very sloppy circuit with a few feet of wire and
> 10 caps in series. I am planning to solder the cap leads directly to
> the flash socket. The equations provided with the flashtube give
300ns risetime, or complete discharge in 300ns? For that you'd be
talking nearly 1 kA, which is likely way too much for some wimpy
0.56uF film capacitor. It's best to use a specifically-rated cap
(such as a high-current snubber capacitor, or the Wima FKP1 caps
Ban mentioned), but in a pinch you may be pleasantly surprised by
the pulse performance of ac motor-run caps.
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