Re: Bottle Capacitor Values

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

Original poster: "Gregory Hunter by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ghunter31014-at-yahoo-dot-com>

My original junkbox coil used four, 750mL wine bottles
in parallel for 6.6nF (verified with one very cheap
Chinese and one very expensive Fluke DMM using cap
function). That's 1650pF per bottle. These were
water-clear glass with straight, parallel sides,
abrupt, rounded shoulders, and short necks. I filled
them with brine and covered them with foil right up to
the junction of neck and shoulder.

While I had my paws on the expensive Fluke meter, I
measured a few other 750mL wine bottles of various
shapes and colors. These all came in between 1200 -
1900nF.

Tank cap value is not super critical. These numbers
are close enough to get you sparking.

Regards,

> does anybody know of some way to (inexpensively)
> measure, calculate, or
> estimate capacitance values of bottle caps? 
> 
> -Chris
> 


=====
Gregory R. Hunter

http://hot-streamer-dot-com/greg

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