Re: IGBTs and CW Tesla Coils

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

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

Tesla list wrote:
> 
> Original poster: "Marry Krutsch by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <u236-at-earthlink-dot-net>
> 
> Hi All,
> 
>         Terry's work with IGBTs has made me wonder if they could be used in
> continuous wave SSTCs.  Since you SSTC guys are just using MOSFETs as
> switches anyway, couldn't IGBTs be used instead?  I don't know how high
> IGBTs can be pushed frequency-wise.  Also are IGBTs PNP or NPN?
> 
>         These things sound pretty cool.  I might have to buy some :-)).
> 
> Thanks,
> Winston K.

	If the frequency were low enough I think they could be used in an
appropriate circuit, which I'm not defining.  At one time Marconi used a
transmitter with a really high speed rotary gap which produced one spark
per cycle of the RF.  Of course, the frequency was down around 20 kHz.

Ed