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Re: S.G. Replacmt-update



FutureT-at-aol-dot-com wrote:
> 
> Richard, Bert, All,
> 
> Regarding Lou Balint's experiment in which he used a transistor to replace a
> spark gap in a TC, and used ferrite to boost the coupling to k = .84, and in
> which optimal quench time (which prevented splitting of frequencies) was
> originally found to be 1.2uS, which was surprisingly rapid:  ( I
> unfortunately forget the original freq. and can't find the original post.  :(
>      )
> 
> In a new test, Lou set up everything the same as before, but varied the
> voltage to the transistor base.  At some lower voltage setting, the optimal
> quench time now ranged from 3uS to 5uS depending on the voltage.  The
> original voltage still gave a 1.2uS optimal quench time.   He suggests that
> more work is needed.   This was a very quick test, so voltages, turn on/off
> points, Q, etc were not monitored.   Unfortunately, Lou stated that he does
> not plan to continue along this line of investigation, due to other research
> demands.
> 
> Happy and "quenchy" coiling,
> 
> John Freau