Re: Three phase TC

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

Original poster: "Bert Hickman by way of Terry Fritz <twftesla-at-qwest-dot-net>" <bert.hickman-at-aquila-dot-net>

Brain, Jim, Chris, and all,

Although getting 2 resonators to operate 180 degrees out of phase is simple
with disruptive systems, getting TRUE three-phase operation (resonators
actually oscillating 120 electrical degrees apart) has thus far only been
done electronically or via a high speed 3-phase alternators. In April,
2000, Duane Bylund discussed his solid state 3-phase and 6-phase systems on
this list. Duane used three identical resonators, each driven 120 degrees
apart from synchronized MOSFET drivers. Unfortunately, Duane's web site
appears to be down, but I did save some of the pictures at the time. A
couple of unique pictures show 3-phase "Y" discharges between resonators -
this characteristic discharge can only be accomplished from a true
three-phase system. These can be seen at:
http://www.aquila-dot-net/bert.hickman/photos/14.jpg
http://www.aquila-dot-net/bert.hickman/photos/15.jpg

HOWEVER, Jim's idea may actually work for disruptive systems - by using
precisely triggered spark gaps on three independent (but otherwise
identical) coils. A triggered spark gap, when properly set up, can be
repeatably triggered with relatively little jitter (~10-20 nS). If we use a
lower operating frequency for the coils, the effects of this jitter can be
further reduced. In the example Brian provided, a sequence of high voltage
trigger pulses, each separated by 1.67 uSec, would be sufficient to
initially time-phase the three systems by 120 electrical degrees. However,
it's not clear that this phase relationship will be maintained once
significant energy begins to be exchanged between them... 

Best regards,

-- Bert --
-- 
Bert Hickman
Stoneridge Engineering
Email:    bert.hickman-at-aquila-dot-net
Web Site: http://www.teslamania-dot-com

Tesla list wrote:
> 
> Original poster: "Basura, Brian by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <brian.basura-at-unistudios-dot-com>
> 
> Jim,
> 
> Yes. I'd like to get the RF between the three secondaries 120-degrees out of
> phase with each other (3-phase as it's being called here on the list). This
> is quite a bit different than having the bangs phased 120-degrees apart as
> Jonathan and others are suggesting.
> 
> Your idea of using a RSG firing at 120-degrees of the RF cycle seems
> impracticle to implement. If we have a 200khz coil then each cycle would
> only be 5uS (1/200,000). If we then take 1/3 of that it gives us 1.67uS. It
> seems like that timing would be impossible to obtain using a RSG. Let's
> assume an 8-electrode rotor with a 11" diameter (through centerline of
> electrodes). Rotational speed would need to be around 5million RPM (Yikes)
> and tip speed would need to be close to warp speed (154k MPH).
> 
> Thoughts?
> 
> Regards,
> Brian B.
> 
>  -----Original Message-----
> From:   Tesla list [mailto:tesla-at-pupman-dot-com]
> Sent:   Friday, July 06, 2001 5:57 PM
> To:     tesla-at-pupman-dot-com
> Subject:        Re: Three phase TC
> 
> Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <jimlux-at-earthlink-dot-net>
> 
> Brian,
> do you want the RF to be 3 phase (so you get arcs from one topload to the
> others) or do you want the "bangs" to be 3 phase...
> 
> Tripolar with RF could be done a couple ways... one is by setting up your
> primary L's and C's so that they form the right resonant circuit (sort of
> like how you force bipolar by running the primaries in series..)
> 
> Another way is with a precision fired triggered gap....fire the second
> coil's gap 120 degrees worth of RF time after the first, and the third 120
> after that.  That's the approach I'm thinking of trying...
> 
> Tesla list wrote:
> >
> > Original poster: "Basura, Brian by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <brian.basura-at-unistudios-dot-com>
> >
> > Jason,
> >
> > I've thought this quite a bit. First off you need to clearly define what
> you
> > are referring to when you say three phase TC. If you are speaking of mains
> > power then there are a number of options. You could rectify the three
> phases
> > and run a DC coil (Greg Leyhs Electrum comes to mind). Or you could use
> > three transformers (one on each phase) and three primary caps all switched
> > into one primary via a rotary spark gap (as outlined by the master
> himself,
> > N. Tesla).
> >
> >  What I'm aspiring to do is quite a bit different. I'd like to have three
> > secondarys which are 120-degrees out of phase with each other.  I still
> > haven't found a strategy to accomplish this in a disruptive coil. I'd
> > probably have to go with a Toob coil to get the secondaries to be truly
> > three-phase but I'm not that interested in toobs. Creating a bipolar
> design
> > is easy but three phase (tripolar ?) may be impossible...
> >
> > Regards,
> > Brian B.
> >
> >  -----Original Message-----
> > From:   Tesla list [mailto:tesla-at-pupman-dot-com]
> > Sent:   Wednesday, July 04, 2001 11:10 AM
> > To:     tesla-at-pupman-dot-com
> > Subject:        Three phase TC
> >
> > Original poster: "Jason Petrou by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> > <jasonp-at-btinternet-dot-com>
> >
> > Hi all,
> >
> > Would it be possible to build a gap for and actually run a three phase TC?
> > or would you need to split up the phases and use 3 different cap banks?
> Have
> > I lost the plot here ;)
> >
> > Regards,
> > Jason
> >
> > Geek # 1139 Rank G-1
> > www.thegeekgroup-dot-org