Vacuum tube tank cap vs. transistor fast diode

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

Original poster: "Craig Fuller by way of Terry Fritz <twftesla-at-qwest-dot-net>" <cbfull-at-hotmail-dot-com>

I came across an electical engineer's website the other day which said that 
you should always put a fast recovery diode across the primary in a flyback 
circuit, to reduce the stress on the switching device (for single transistor 
feedback circuits only, I think).  I have always wondered myself why people 
have not been doing this.
Also, the vacuum tube coil circuits are not that different from the flyback 
circuits, and I am hoping (when I can get a workshop) to get my VTTC working 
with a fast diode instead of a tank cap.  Anyone have any experience with 
this or already tried it?  It sure would be nice to do away with that 
de-tuning problem in VTTC's whenever you put any kind of load on it(i.e. 
drawing a spark).


_