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

[Futuret <futuret@xxxxxxx>]

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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