Re: Awesome Quarter Shrinking Capacitors on EBAY

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Paul Marshall" <klugmann-at-hotmail-dot-com> 

One thing that I have noticed, in quarter shrinking is that total available 
energy does not always Guarantee success. It seems that the best results I 
have gotten have been at higher voltages 30kv and above. Even when the 
energy is equal. For instance, I had a 40kv 32 uf maxwell total energy 25 
kj. I never went that far most of what I shot was between 8-12 kj. The 
quarter was under .5". Later I used
a 45uf 30kV cap. Even at a full 20kJ I never reached the .5" mark. Now I 
have a 330 uf 25kV cap which will give me 103 kJ. I will try this out soon. 
This cap is very low inductance.



Paul S. Marshall





>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Re: Awesome Quarter Shrinking Capacitors on EBAY
>Date: Thu, 09 Oct 2003 15:04:20 -0600
>
>Original poster: Ed Phillips <evp-at-pacbell-dot-net>
>
>"Original poster: Mark Broker <mbroker-at-thegeekgroup-dot-org>
>
>John, an "m" or an "M" always refers to micro.  The standard units for
>capacitors are Farad, microfarad, and picofarad.  Nano and especially
>milli
>are rarely, if ever, used.  I always wondered why cap manufacturers
>couldn't use "u" for micro - it looks close enough to Greek "mu" and is
>certainly much less ambiguous than "M".
>
>I think most of us have stories of EEs showing their ignorance in front
>of
>the AAS techs....  And I have no problems admitting that I've been on
>both
>ends more than once.  ;)
>
>Cheers,
>
>Mark Broker
>Chief Engineer, The Geek Group"
>
>         Unfortunately the SI unit nuts are taking over the world (at 
> least that
>of technical magazine editors) and in that system no number is allowed
>to be less than 1 or over 1000!!!  As a result, nano and milli are
>coming into use in printed literature at least.  It's the "in" thing to
>do just like some rules of etiquette or placement of silverware at the
>dinner table; no practical value but separates those who "know" from
>those ignorant fools who don't!
>
>         By the way, a 38 millifarad LV tantalum capacitors sounds much more
>reasonable than a 4 millifard 4 kV oil-filled capacitor!
>
>Ed
>

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