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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