At 02:08 AM 2009-11-04, Shai Drori wrote:
>The solution is very simple. The capstan of the Tonschreiber did not
>run off the incoming AC but had an oscillator and amplifier as a
>servo. It could run at any speed from I think 9 to 130 cm/sec.
That is true, but I don't think Jack Mullin's machines were the
Tonschreiber model and were lacking the oscillator and amplifier, but
also, I do not believe them to be true Hysteresis-Synchronous motors, either.
The point here is that if Tonschreibers were used (or the circuitry
associated with them was put into a studio recorder) then George's
discussion of mains frequency would need another footnote.
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