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Re: Smoking the Neons!
Tesla List wrote:
>
> >From SSNSanders-at-aol-dot-comWed Oct 23 21:51:43 1996
> Date: Wed, 23 Oct 1996 12:17:40 -0400
> From: SSNSanders-at-aol-dot-com
> To: tesla-at-pupman-dot-com
> Subject: Re: Smoking the Neons!
>
> In a message dated 96-10-23 03:38:51 EDT, you write:
>
> <<
> >You also should add series inductors, caps to ground, and safety gaps to
> >ground for reducing RF coupling to the transformers, and to provide a
> >path to ground for any secondary "hits" that may couple into the primary
> >circuit.
> >
> >Safe coilin' to ya! >>
> I thought that a rotary motor that ran at a mutiple of the line frequency ,
> 1800/3600RPM would be in sync. I know its not that cut and dried but
> basically is it not? Stephen S
Stephen -
There are two types of sychronous motors - frequency and salient-pole.
Frequency-synchronous motors do run at a frequency-related RPM: 1800 RPM
motors at 30x, and 3600 RPM motors at 60. It has to do with the number
of poles and such in the motor. Salient-pole motors are a different
beastie altogether.
A salient-pole motor not only runs at a frequency-related rate, but also
is internally designed so that the armature *physically* locks into the
magnetic poles in the stator. Hence, this type of motor will ALWAYS come
up to a frequency-locked RPM, *and* also a physically-locked position-
this guarantees that the electrodes will come into proximity at the
same point on the AC waveform each time the motor is turned on.
Hope this helps.
- Brent
BTW - I just uploaded some detailed photos on my sync. motor mod's to the
funet server: http://nic.funet.fi/pub/sci/electrical/tesla/pictures/turner
...