>
>>Ditto for
>> his decision to ignore Jenning's advice on using vac. relay speedup
>> circuits. Switching operating bias to non-linear levels during soft
>> syllables is another example.
>
>I believe ETO incorporated the vacuum relay accelerator circuit at the
>introduction of their Alpha 77 (not Dx/Sx) in 1973 or thereabout.
? 50v is not sufficient for a 26v relay. According to my oscilloscope,
c. 100v is needed.
The relay has a 0.3H coil.
>The circuit uses a series of diodes and electrolytic capacitors to achieve
>better contact start speed for the purpose of eliminating RF hot-switching
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