Re: Phase adjustment circuit

["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 4/25/01 10:20:05 PM Eastern Daylight Time, 
tesla-at-pupman-dot-com writes:

Mike,

The size of the fuse depends on the size of the motor.  A 1/3rd
HP motor probably needs a 6A fuse or something similar.  Use
a large enough fuse so it doesn't blow out when you're using
the proper sized cap to give a the full phase shift with minimal
reso voltage buildup across the motor.  You'll probably need
100 to 180uF, somewhere in that area.  If the motor uses a
run cap, it may need a smaller phase shift cap than expected
however.  If the motor is 3600rpm, you'll get a 90 degree shift,
if it's 1800rpm you'll get a 45 degree mechanical phase shift,
(90 degrees electrical).

John Freau

> Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" 
<CHURCHMON-at-aol.
> com>
>  
>  Hi all,  I constructed  John Freau's  phase adjustment circuit and I need 
a 
>  ballpark 
>  idea of what size cap's I need.I purchased six motor run caps for $30.00 
>  ,5-at-40uf ea. 
>  ,and 1-at- 50uf.