Re: ASRG & DC power oddity

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

Original poster: "S & J Young by way of Terry Fritz <twftesla-at-qwest-dot-net>" <youngs-at-konnections-dot-net>

Weazle,

Your motor gives a break rate of 3450 / 60 times 2 or about 115 BPS.  There
is some AC superimposed on your DC.  The higher the load, the more AC you
will have.  So yes, you can hear and see the beat between 60 Hz and the 57.5
RPS of every other electrode presentation.  If you increased your 1 mF cap
to 10 mF, the effect would not be as noticible (but you would have a much
more lethal power supply.)  Or, modify the motor to run at 3600 RPM
(synchronous).
--Steve

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, January 27, 2002 10:47 AM
Subject: ASRG & DC power oddity


> Original poster: "J. B. Weazle McCreath by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <weazle-at-hurontel.on.ca>
>
>
> Hello Coilers,
>
> The milder weather we're having has let me carry on with some of my
> experiments with an ASRG and the DC power supply I'm developing and
> I've noticed an oddity.
>
> I'm using a 3450 RPM, 1/12 HP motor to turn a 6 inch teflon disk in
> which there are two flying electrodes passing thru the disk, spaced
> 180 degrees apart.  The two fixed electrodes are on either side of
> the disk, meaning I get an alignment twice each revolution, or 120
> breaks per second.
>
> I notice that the motor has what I would term a beat note to it when
> running, the beat occuring roughly at one second intervals, sounding
> much like a twin-engined propeller driven aircraft when the engines
> are out of sync.  The spark when firing seems to follow this beat as
> well, and you can actually see the intensity of the arc varying with
> the beat note from the motor.
>
> The power supply is a twin MOT with the classic half wave doubler to
> give me about 11 KV unloaded.  I'm feeding the output of the doubler
> to the ASRG through two charging chokes (MOT secondaries) of 8.5 mH.
> The doubler cap is 1 uF., and the tank cap is 0.011 uF., yielding the
> recommended ratio as others have found.  I'm using my testing primary
> which in combination with the tank cap is resonant at about 430 kHz.
> and there is no secondary in the test setup.
>
> Can anyone on the list shed any light on this "beat note" behavior?
> Is it possible that my motor is under-powered to turn even a modest
> sized disk like I'm using?  Any suggestions are most welcome.
>
> 73, Weazle, VE3EAR/VE3WZL
>
> Listening: 147.030+ and 442.075+
> E-mail:    weazle-at-hurontel.on.ca
>            or ve3ear-at-rac.ca
> Web site:  http://www.hurontel.on.ca/~weazle
>
>
>