Re: chokes

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

Original poster: "Jon Tebbs by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jgtebbs-at-eos-dot-net>

Hi Greg,

I would like to urge you to read through these three papers by Terry Fritz:

http://hot-streamer-dot-com/TeslaCoils/MyPapers/spark1/sparkgap.html
http://hot-streamer-dot-com/TeslaCoils/MyPapers/rcfilter/rcfilter.html
http://hot-streamer-dot-com/TeslaCoils/MyPapers/rlcfilter/rlcfilter.html

Terry presents some of the best data and waveforms that show what is
happening in the TC primary circuit. His analysis shows why it is a
really bad idea to use chokes. From an RF design standpoint, a lossy R/C
filter really is the best practical protection for NSTs.

Cheers,
-- 
Jon G. Tebbs
<jgtebbs-at-eos-dot-net>



Tesla list wrote:
> 
> Original poster: "Mr Gregory Peters by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <s371034-at-student.uq.edu.au>
> 
> Thank you all for your individual input on chokes. However, this has
> served to confuse me even more. Some of you are using a few turns on a
> 3/4" air core. Some of you are saying not to use an RF choke at all,
> and yet more are saying to use many turns on a ferrite core. All the
> repliers have claimed that their particular system has worked very well
> for them. This is all really confusing. I would very much like to hear
> what people like Richard Hull and Quick have to say on this matter if
> they are still out there.
> 
> Richard Quick used to use 18 turns on a 2" ferrite core. However, this
> is exactly what I was using when my neon died, so I am a bit skeptical
> of it. Conversely, I ran my coil successfully for months without any
> chokes at all! help!!!!!!
> 
> Greg.