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Re: RSG sweet-spot
Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <FutureT-at-aol-dot-com>
In a message dated 2/12/01 1:43:22 PM Eastern Standard Time, tesla-at-pupman-dot-com
*Correction* below, where I said *start* , i meant to say *lock*.
To Terry about the greater fervor for keeping the list on-topic....
I say..... BRAVO !
> Chris, Trent,
> Another method that may work is to use the phase shifter circuit.
> This circuit can be adjusted to give some resonant rise, which can
> help to start the motor despite a heavy rotor. Select a phase shift
> cap size that gives enough resonant rise to start the motor. (Adjust
> the variac knob top the position that gives the most reso-voltage rise
> to start the motor.) But
> adjust the mechanical phase such that the motor is normally run
> at a different variac postion, where the voltage is lower. (This way
> the motor starts at high voltage, but runs at a lower voltage for
> less stress on the components.)
> What I mention above is a special way to use the phase shifter
> circuit. It is normally not used that way.
> The phase shifter circuit can be seen at:
> John Freau