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Re: [TCML] Variable RSG
In a message dated 4/9/08 7:51:35 P.M. Eastern Daylight Time,
> I've experimented with John Freau's phase adjust circuit using
salient-pole motors, and it works as
> However, I've never tried it on an un-modified synchronous motor
>induction motor). Does it work on an regular squirrel-cage motor?
Pretty much a moot point, since as John himself has already pointed out,
squirrel-cage induction motors will *always* run with some "slip" so their
RPM is slightly less than their nominal "synchronous" speed. If any motor of
any type isn't running at a fixed RPM that is a factor of 3600, the phasing
relationship between the flying and fixed electrodes will vary as the motor
runs. The actual RPM of a squirrel-cage induction motor is dependent on the load
it's under, and it's dependent in a highly non-linear manner.
I'd guess John's phase circuit *does* affect the phase of a non-synch
motor, but the effect is irrelevant since the electrode alignment-to-power
source phasing will be all over the place anyhow.
Center for the Advanced Study of Ballistic Improbabilities
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