Re: "Gas burner" corona from STSG driver

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

Original poster: "Kurt Schraner by way of Terry Fritz <twftesla-at-qwest-dot-net>" <k.schraner-at-datacomm.ch>

John, Gary -

To my knowledge, what has been used for X-Ray were induction coils, not
Tesla coils. Probably John meant this (please correct me if I'm wrong)?
- The design of those inductors took into consideration, to make the
secondary sparks voltage-waveform with as low "inverse" as possible,
meaning a waveform with high DC part. This is elucidated i.e. in
M.A.Codd, Induction Coil Design, E.& F.Spon, London 1922, reprint
obtainable by PV-Scientific.

Cheers,
         Kurt

Tesla list wrote:
> 
> Original poster: "Lau, Gary by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<Gary.Lau-at-compaq-dot-com>
> 
> Be careful how you state this.  The terminal voltage of a Tesla coil is AC.
>  The secondary oscillations are centered about zero volts.  Insulated
> objects near the secondary will develop a DC or static charge deposited
> upon them, due to the asymmetric conduction (a.k.a. rectification) of
> corona.  This is what an electroscope will indicate.
> 
> Gary Lau
> MA, USA
> 
> Original poster: "John H. Couture by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <couturejh-at-mgte-dot-com>
> 
> Allan -
> 
> Not correct. Tesla coils were used by hospitals to make X-Rays (DC needed)
> until the thirties when other devices became available. Tesla said that
> Tesla coils could produce DC because the negative output was greater than
> the positive output. You can prove this by charging an electroscope with a
> TC and checking the type of charge.
> 
> John Couture