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

[A Rothman <canihazpolepig@xxxxxxxxx>]

I finally found what appears to be the sweet spot, capacitance wise, for my
SRSG.  I am observing 5VAC of resonant rise over the course of altering the
rotor's phase by 90 degrees.  I'm using 190uF.

Thanks to everyone for their assistance, and to John for starting it all!

Aric

On Fri, Sep 24, 2010 at 2:37 PM, Phil Tuck <phil@xxxxxxxxxxx> wrote:

> 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
>
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla