Re: Help with my rotary gap (and other tuning problems).....

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Steve Ward <steve.ward@xxxxxxxxx>

I second what John says.  I have made several SRSGs from those small
oriental motors.  I usually aim for 4uF since again, the 2.5uF and 6uF
caps i tried werent optimal.

Steve Ward

On 7/17/05, Tesla list <tesla@xxxxxxxxxx> wrote:
> Original poster: FutureT@xxxxxxx
>
> In a message dated 7/17/05 2:33:12 PM Eastern Daylight Time,
> tesla@xxxxxxxxxx writes:
>
>
>
> >The variac is an Ohmite 3 amp 0-135v.....and the motor is an Oriental .03A
> >7.5w. I'm using a 47uF cap for adjustment.
>
>
> I tried that type of motor with the phase shifter one time.  I assume you
> meant to say 0.3A.   I found that 7uF was too large, and 2.5uF was
> a little too small but it worked.  Probably about 4uF would be good.
> But you should do a test to verify the proper resonant rise.
> Some of those motors use a run cap.  Maybe you left it off?  By
> using a little larger run cap you can get more power out of those motors
> BTW.  I think I used 3uF instead of the 2uF that it came with.
> 47uF for the phase shift cap seems much too large to me.