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

["Phil Tuck" <phil@xxxxxxxxxxx>]

John,
Thanks never realised that. SRSG's using a modified 'ordinary' motor and
phase controller are a big undertaking for a coiler as there are so many
deciding factors  (the width of flats, capacitor size etc.) but the end
result is worth it in performance.

Regards
Phil

www.hvtesla.com

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Futuret
Sent: 24 September 2010 23:17
To: tesla@xxxxxxxxxx
Subject: Re: [TCML] Questions on the Freau SRSG Phase Controller

Phil,

I seem to remember that 240 volt motors need only 1/4 the amount of
capacitance of that needed by a 120 volt motor.  I assume your 2HP motor
uses 240 volts.  If your 2HP motor was a 120 volt motor, maybe it would need
496uF.  Then if we divide 496 by six (to bring it down to a 1/3 HP
situation), we get 83uF.  Well that still doesn't equal 195uF, but each set
up tends to be a little different anyway.  

John


 

-----Original Message-----
From: Phil Tuck <phil@xxxxxxxxxxx>
To: 'Tesla Coil Mailing List' <tesla@xxxxxxxxxx>
Sent: Fri, Sep 24, 2010 2:37 pm
Subject: RE: [TCML] Questions on the Freau SRSG Phase Controller


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



 
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