Re: Motor Phase Controller problems

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Allanh by way of Terry Fritz <twftesla-at-qwest-dot-net>" <allanh-at-starband-dot-net>

I've tried a 2.8 amp variac and, while it did provide a measure of phase
shift, it caused lots of noise from the motor. I'm using a C&H 1/20 hp sync
motor. The variac also began to heat up after a few minutes of operation so
I haven't used it for that purpose again. BTW I used a 50 ufd. cap.


allan

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, September 02, 2002 11:32 AM
Subject: Motor Phase Controller problems


>
> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<dhmccauley-at-spacecatlighting-dot-com>
>
> I'm currently using John Freaus simple motor phase controller basically
> using my variac and a capitor (simple LC phase-shifter) circuit, but have
> been getting the following problems:
>
> I currently am getting about 45 degrees of adjustable phase shift.
However,
> when I try to go beyond that, the motor simple looses locks, slows down,
and
> eventually stops.
> I am currently using a 2A variac (small one) and tried a variety of
> different capacitor sizes, but can't seem to get rid of this problem.
>
> Could it be my variac is too small (inductance values too small???)
>
> Thanks
> Dan
>
>
>
>
>
>