Re: Not shooting for anything gloriuous, but... (fwd)

To: tesla-at-pupman-dot-com
Subject: Re: Not shooting for anything gloriuous, but... (fwd)
From: Tesla List <mod1-at-pupman-dot-com>
Date: Fri, 16 Apr 1999 21:04:49 -0600 (MDT)
Approved: mod1-at-pupman-dot-com



---------- Forwarded message ----------
Date: Thu, 15 Apr 1999 17:37:43 +0100
From: "Gregory R. Hunter" <ghunter-at-accucomm-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Not shooting for anything gloriuous, but...

Yuri,

What are you planning to use for a power supply?  That will determine what
size & type of capacitor to use.  In a spark excited coil, capacitors made
from plastic bottles tend to fail quickly.  Try using no-refund glass beer
bottles wrapped with foil and filled with very strong salt water.  A
plastic champagne cork or a plastic bottle cap with a long rod or bolt
through it will serve as the inner electrode.  Also, float an inch of
mineral oil or motor oil on top of the salt water to prevent corona and
evaporation.  By the way, none of this info is from me--I learned it all on
the Tesla List!

Greg

At 07:05 PM 4/14/99 -0600, you wrote:
>Original Poster: "Yuri Markov" <wmondale-at-hotmail-dot-com> 
>
>Please bear in mind as you read this message that I am not attempting 
>to build a solid-state coil. The primary is unmeasured and hand 
>shaped. The secondary is wound on a wrapping paper tube. I am not 
>looking for help abot that - I know perfectly well that it is silly. 
>However, I need some help regarding the capacitor. I plan to use 
>something of the salt water type. If I put water in a two liter soda 
>bottle and dissolve ordinary table salt (lots of it) until it stops 
>dissolving, then wrap the outside with aluminum foil, will it worr? 
>Should I use several in series? In parrelell? Please help.
>
>By the way - when a capacitor is measure in farads, what exactly does 
>the number mean? I understand that it is coulumbs(forgive the 
>spelling) per volt, but what does that mean, practically? What is the 
>difference, say, between 0.002 uF and 25 uF? Any clarifying comment 
>would help. Thanks.
>
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