RE: [TCML] Questions on the Freau SRSG Phase Controller

["Phil Tuck" <phil@xxxxxxxxxxx>]

Mike wrote > I use a 1/3 hp G.E. 3600 rpm motor modified for synchronous
operation. The gap has four  flying electrodes  and two stationary. The
phase controller consists of 195 uF of caps ,


That is interesting, as it seems the capacitor size is not scaled upwards as
the motor HP increases. My 2HP SRSG uses  124uF, yet Mike uses 195uF on a
motor that is only 1/6 of the power.

Phil


-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of churchmon@xxxxxxx
Sent: 24 September 2010 19:02
To: tesla@xxxxxxxxxx
Subject: Re: [TCML] Questions on the Freau SRSG Phase Controller


 Hi Aric and list members,
Although I have not posted in some time I would like to share my SRSG (with
phase adj.) set up for comparison purposes.
I use a 1/3 hp G.E. 3600 rpm motor modified for synchronous operation.The
gap has four  flying electrodes  and two stationary.
The phase controller consists of 195 uf. of caps , 20 amp general radio
variac , on off switch for motor through the variac, a  9 amp fast blow fuse
and a switch on the caps to engage the circuit For testing the phase
adjustment I use a timing light (Auto parts store) connected to a 12 volt
battery charger. I clip the spark plug wire clip  to the 120 volt ac cord
going to the motor.When I aim the light at the rotor while turning the
variac knob I get a full  90  degrees of adjustment and this gives 120  or
240 bps.

Regards,
Mike Church
Bakersfield Ca. 


 


 

 

-----Original Message-----
From: A Rothman <canihazpolepig@xxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Fri, Sep 24, 2010 4:55 am
Subject: Re: [TCML] Questions on the Freau SRSG Phase Controller


The line-power LED I described works reasonably well.  I have tried
capacitances up to 155uF so far, and am unable to exceed about 45 degrees
before losing lock.  I never see a resonant rise in the voltage across the
motor.  Has anyone used 1/2 HP motor, 3600 RPM with John's phase controller?
What capacitance did you find to be ideal?

Aric

 
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