Re: Good times Bad times...

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

Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <FutureT-at-aol-dot-com>

In a message dated 4/15/01 6:56:11 PM Eastern Daylight Time, tesla-at-pupman-dot-com 
writes:

> 
>  I tried to make the SRSG variable phase shifted ( I followed Johns circuit
>  diagram ) but couldnt get that
>  4-5 volt rise, 

Scot,

It's not essential to get the 4 to 5 volt rise.  the system can work
fine with no rise at all or even with a voltage drop, depending on
other factors.  Bottom line:  If your motor phase shifts well, and
remains sync-locked for all or most of the variac's range, it's fine.
Some systems tend to lose lock without the 4 to 5 volt rise.
It's the capacitor that mostly determines the reso-rise.  Again,
if the motor shifts well, and remains locked, it's OK now.  If it
loses lock too easily, then you may need a little more capacitance.
Beware of motor self-braking with a too-large cap though.

Sounds like your coil is progressing well.   I'll comment more on
spark length later.

John Freau


> my system only dropped voltage as the variac was increased (
>  Im using a 1/3hp modified
>  motor, 50K ohm resistor set, 280uF worth of caps, a 25A 140V variac,
>  various fuses and protection) I
>  wonder if John or Terry could tell me what component is the major factor
>  that shifts the phase then