Re: Micro Tesla Coil design

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

Original poster: "robert & june heidlebaugh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <rheidlebaugh-at-desertgate-dot-com>

Joyon: Just as a suggestion an ignition coil like a TC requires a capacitor
to tune and produce maxinun power transpher. Usualy a 0.22uf is used. With
out this capacitor the spark is poor. Yes some high voltage brute force
circuits can force a coil to preform without a capacitor, but not
efficently. Yes I have been accosted by people who profess other uses of the
capacitor, but real testing proves them wrong. I recomend the capacitor use
to use less power to give a better spark.
   Robert  H
-- 


 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > Date: Fri, 20 Dec 2002 14:50:44 -0700
 > To: tesla-at-pupman-dot-com
 > Subject: Re: Micro Tesla Coil design
 > Resent-From: tesla-at-pupman-dot-com
 > Resent-Date: Fri, 20 Dec 2002 14:53:34 -0700
 >
 > Original poster: "Jolyon Vater Cox by way of Terry Fritz 
<twftesla-at-qwest-dot-net>"
 > <jolyon-at-vatercox.freeserve.co.uk>
 >
 > I know this sounds pessimistic but but with input powers as low as this
 > isn't there a real risk that micro coils (nice) can turn out to be a
 > micro-perfomance coils (not so nice!) unless they are designed well, which
 > can be tricky to do.
 >
 > Throughout most of my (limited) experience I have found that it is easy to
 > build a TC that works but less easy to build one that works well. I have
 > been lucky to get more than 1 inch of spark from anything powered by my
 > ignition coil driver and when I did (and got 6" of spark) I also had to use
 > a DC rectifier, 22nF of bottle capacitors AND a 25" dia topload -hardly a
 > "micro"-coil is it! Am I doing something wrong here?
 >
 > Jolyon
 >
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Friday, December 20, 2002 1:13 AM
 > Subject: Re: Micro Tesla Coil design
 >
 >
 >> Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>"
 > <evp-at-pacbell-dot-net>
 >>
 >> Tesla list wrote:
 >>>
 >>> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
 >> <dhmccauley-at-spacecatlighting-dot-com>
 >>>
 >>> Might still be a bit big to be considered a "microcoil".  I'm looking
 > for a
 >>> transformer thats no bigger than a C-battery maybe.
 >>> Something like 2kV, 1mA max output or similar.
 >>> Secondary coil might only be 3/8"-1/2" in diameter.
 >>> Be very high frequency - that could pose problems in itself.
 >>>
 >>> Dan
 >>
 >> Try a model airplane engine ignition coil, which fits that description
 >> pretty well.  Drive with a transistorized interruptor circuit.  I have
 >> one running in a hand-held transmitter to play with coherer receivers;
 >> runs off a four cell NiCad pack.
 >>
 >> Ed
 >>
 >>
 >>
 >
 >