Re: ASRSG question

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>

Hi Gerry,

I tried both .1 uFd and .2 uFd. .2 uFd is a pretty big capacitance,
I know, but the 3500 rpm is the MAX rpm rating of the motor
and I wasn't running it at its max rpm. The rsg motor is a DC
with infinite speed control via a variac but I can't really tell ex-
actly what rpm I'm running. I can only aproximate it by measuring
the input voltage and multiplying the product of the input volt-
age/130 since 130 VDC is the rated voltage of the motor. I
figured the 15 kVA pig can charge even a pretty large primary
cap pretty fast although I haven't done the exact math on this
with JAVATC yet.

The pig is ballasted with a the guts of a 225 Lincoln arc welder
set at its maximum (225 amp) weldeing setting and I am using
(2) .1 uFd, 50 kV Hipotronics pulse caps for either .1 uFd
byt using just one, or .2 uFd buy paralleling them.

David

----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Monday, April 04, 2005 11:58 PM
Subject: Re: ASRSG question


> Original poster: "Gerald  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
>
> David.
>
> One idea that crossed my mind is that your 1/4 inch electrode gap may be 
> part of the problem.
> At 3500rpm and 8 electodes, you will have 467 pps.  I dont know what size 
> of Cap you are using but maybe at 467pps, the cap cant be charged high 
> enough to break across a 1/4 in gap.  Does it run at a lower rpm.  Try 
> 240pps.  I would not go down to 120 pps with an ARSG since the phase may 
> accidently linger at zero cross over and this could cause an uncontrolled 
> voltage rise if any of the ferromagnetics start to saturate.  If you 
> electrically connect all rotor electrodes together, you will be able to go 
> to two static electrodes and reduce the total gap distance to 1/8 inch.
>
> What is the PIG ballasted at and what is your Cp value?
>
> Gerry R.
>
>
> > Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>
> >
> >
> > No, I'm using 8 rotary electrodes driven on a 11 1/2" diameter
> > x 1/2" electrical grade fiberglass disc. The motor is a variable
> > speed 0 - 130 VDC, 2.5 HP treadmill duty motor that is rated
> > at 3500 rpm.