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Re: John Freau's Phase Controller

Original poster: westland <westland@xxxxxx>

It probably just requires playing around with components until I get the result I want. I've put this aside for the moment, but I'll post if I am able to get this working. You say for the 1800 rpm motors (or 1500 over here) you only get half the mechanical shift that you do for the 3600 rpm motors, right? So maximum around 35% (which is enough for my gap)

Tesla list wrote:
Original poster: FutureT@xxxxxxx
In a message dated 1/22/07 12:45:05 AM Eastern Standard Time, tesla@xxxxxxxxxx writes:

You haven't mentioned anything about the variac inductance ... is
this critical, or simply something that you can adjust the cap
around.  John, when you implement the circuit, what sort of
inductance range are you typically using?



I never measured the inductance, but I've used usually a 7.5amp
variac.  I don't think it should be too critical.  But since you
did get the 3 5o 5 volt resonant rise thats' a good sign.
I'm surprised things didn't work better, I have no idea what's
happening.   THe mechanical phase shift will be only about
35 degrees or so, half of the electrical phase shift.