Re: Microwave Oven Sync. Motors!

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

Original poster: "Peter Terren" <pterren-at-iinet-dot-net.au> 

Those circular magnets from MO's plate turners have multiple poles, around 8
from memory which is easily seen with ferro fluid or iron filings. At 5 W =
6 mHp (millihorsepower) I doubt that they could be adapted to Tesla spark
gap use even with a micropropellor gap.

For comparison my angle grinder ARSG is rated at 11,000 rpm at 1100 W with 8
electrodes for a breakrate of 1460/sec although this is one of the fastest
rates I have heard of.

Cheers
Peter (Tesla Downunder)
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, April 17, 2004 10:23 PM
Subject: Microwave Oven Sync. Motors!


 > Original poster: "Jim Mitchell" <Electrontube-at-sbcglobal-dot-net>
 >
 > Hello List,
 >
 > This may have been discussesd before but...
 >
 > I was taking apart a brand new "Galanz" brand 700w microwave (payed 40$
for
 > it ;-))  And I was removing the turn table motor when I noticed it said
 > SYNCHRONOUS MOTOR on it.  So I plugged it in,  and it spun slowly, like 5
 > RPM.  I popped the case open and removed the gear assembly... I then
turned
 > the motor on again.  This time It was spinning faster ~400 RPM?  It was
 > also in sync with the line as the stick I had put on the rotor was
standing
 > still in 5 different places.  The motor just had a coil surrounding a
rotor
 > made of what seemed to be a magnet.  I doubt this would have a lot of
power
 > but may work for a small propeller gap.  Sadly mine stopped working after
I
 > got metal shavings stuck to the rotor and it froze up.
 >
 > Regards - Jim Mitchell
 >
 >
 >
 >