Re: rotary jacobs ladder(was Magnetic quenching.)

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

Original poster: "Virtualgod" <mike.marcum-at-zoomtown-dot-com> 

I was referring to the synchronous mechanical rectifier referred to in the
previous links. It seems like if there's any significant load on the output
the arcs will just simply be stretched out (like a climbing arc on a JL)
until the next electrode presentation where the process would repeat, unless
the motor was perfectly synchronous. I always thought that exactly 1800/3600
(or some multiple of 60 for 60Hz) rpm = 0 torque, so no such thing as a
perfectly synch motor. Maybe I'm overlooking something.
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, March 12, 2004 8:13 PM
Subject: rotary jacobs ladder(was Magnetic quenching.)


 > Original poster: "Richard Modistach" <hambone-at-dodo-dot-com.au>
 >
 > woah, hold the phone,
 > whats this rotary jacobs ladder,
 > quick explanation please,
 > or links.
 >
 > regards
 > richard
 > aus
 >
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Saturday, March 13, 2004 1:08 AM
 > Subject: Re: Magnetic quenching.
 >
 >
 >  > Original poster: "Virtualgod" <mike.marcum-at-zoomtown-dot-com>
 >  >
 >  > Wouldn't those gaps pull long sparks in open air like a rotating jacobs
 >  > ladder?
 >  > ----- Original Message -----
 >  > From: "Tesla list" <tesla-at-pupman-dot-com>
 >  > To: <tesla-at-pupman-dot-com>
 >  > Sent: Friday, March 12, 2004 12:59 AM
 >  > Subject: Re: Magnetic quenching.
 >  >
 >  >
 >  >  > Original poster: Bert Hickman <bert.hickman-at-aquila-dot-net>
 >  >  >
 >  >  > Hi Gary,
 >  >  >
 >  >  > Before vacuum tube or solid state high voltage rectifiers were
 > available,
 >  >  > synchronous mechanical rectifiers were used to synchronously switch
 > (like
 >  > a
 >  >  > mechanical H-bridge!) the output from a HV transformer to create HV
DC
 > for
 >  >  > X-ray machines and electrostatic precipitators. They tended to be
 > large,
 >  >  > loud, and needless to say, sparked a lot, and made tons or RFI...
:^)
 >  >  >
 >  >  > Here are a couple of examples:
 >  >  > http://home.freeuk-dot-net/dunckx/wireless/bridge/bridge.html
 >  >  > http://www.iavalley.cc.ia.us/~thatcher/snookdia.jpg
 >  >  >
 >  >  > Best regards,
 >  >  >
 >  >  > -- Bert --
 >  >  >
 >  >  > Tesla list wrote:
 >  >  > >Original poster: "Lau, Gary" <gary.lau-at-hp-dot-com>
 >  >  > >I have not done a lot of reading of Tesla's material.  I have to
 > wonder
 >  >  > >how he managed to build a HV DC power supply?  Wasn't this before
HV
 >  >  > >vacuum tube rectifiers were available?
 >  >  > >I can't imagine that the "blast" created by convection currents
would
 > be
 >  >  > >very effective.
 >  >  > >Gary Lau
 >  >  > >MA, USA
 >  >  > >
 >  >  > >Original poster: "David Thomson" <dave-at-volantis-dot-org>
 >  >  > >Hi Finn,
 >  >  > >  > perhaps it is time to nail down what to expect from applying a
 >  >  > >  > magnetic field across the arc.
 >  >  > >  >
 >  >  > >  > One would expect that it would merely bend into a curve, making
it
 >  > longer,
 >  >  > >  > which hardly seems desirable.
 >  >  > >If you have a copy of Tesla's "Inventions", go to page 305 and read
 > the
 >  > next
 >  >  > >few pages on spark gaps (he calls them "interrupters").  Tesla says
a
 >  >  > >magnetic gap is good for both an AC and DC coil, but particularly
good
 >  > for a
 >  >  > >DC coil.
 >  >  > >His description of his "air-blast" gap is interesting.  Instead of
 > using
 >  >  > >compressed air, Tesla enclosed his gap in either an air tight box
or
 >  > tube.
 >  >  > >The draft caused by the rising warm air provided the air blast.
 >  >  > >Dave
 >  >  > >
 >  >  > >.
 >  >  >
 >  >  >
 >  >  >
 >  >  >
 >  >  >
 >  >
 >  >
 >  >
 >
 >