Re: In vs. Out [small magnefier ]

From: 	DR.RESONANCE[SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: 	Monday, July 21, 1997 6:43 PM
To: 	Tesla List
Subject: 	Re: In vs. Out [small magnefier ]

To: John Freau

Thanks for the data.  With the present workload we probably won't get at
this project until sometime in August or Sept.   Any data you might have
would be helpful.  


> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-poodle.pupman-dot-com>
> Subject: Re: In vs. Out [small magnefier ]
> Date: Monday,July 21,1997 11:52 AM
> From: 	FutureT-at-aol-dot-com[SMTP:FutureT-at-aol-dot-com]
> Sent: 	Monday, July 21, 1997 3:38 AM
> To: 	tesla-at-pupman-dot-com
> Subject: 	Re: In vs. Out [small magnefier ]
> > Hi Rich:  
> > Was wondering if anyone in your group ever tried to drive a small
> > with a high power vacuum tube setup?  I have an 803 with matching 3,000
> > volt, 1.2 ampere power supply and matching filiment xmfr.  I thought in
> > might be fun trying to drive a small magnifier/resonator setup.  I have
> > mind an 12 dia. sec coil closewound with #6 AWG and a 20 in. dia.
> > of 30-60 turns with tuning taps.  This sec. coil to be about 24 inches
> > long.  Resonator coil would be a 24 inch long winding of #14 AWG 3 kv
> > insulated wire -- closewound.  Perhaps a 24 x 5 toroid on top of
> > and a small toroid of 1 inch dia. copper tubing atop the driver sec.
> > I'm not looking for spark-excited performance but thought a nice 36-48
> > discharge would be a good starting point.
> > Comments or suggestions from you or John Freau most welcome.
> > DC at DR.RESONANCE-at-next-wave-dot-net
>   >>
> Hi DC,
> I did some tube magnifier experiments at a lower power level.  These 
> were part of some tests I was doing of Lou Balint's ideas of "tuning"
> the secondary of the magnifier using an external variable capacitor 
> across the secondary coil.  I tried using various secondary inductances
> and "tuning" cap values, but in all cases the spark output was equal to
> or less than that from an ordinary tube coil.  The secondary tended to
> get quite warm in these experiments.  The spark length in these tests
> ranged from 9 to 13 inches, I think I used an 833A tube.  One resonator
> I used was 7" dia, by 6 1/2" high, I also used a 4" dia by 24" high 
> resonator.  
> I also did a "free resonance" test, in which a regular tube coil was run
> and a resonator was placed nearby a few feet away with its base 
> grounded.  A toroid was placed on the tube coil to prevent the production
> of output sparks, forcing the output sparks to emit from the free
> coil.  The sparks were a little shorter from the free resonator coil, but
> was a neat effect.  If I remember correctly, these sparks were 
> somewhere around 20 to 28" long.  I was using four 833A's in the set up.
> Generally I only use toroids on tube coils as a occasional aid for
> the toroids don't help the spark output IMO, and they heat up and waste
> energy at higher powers.  
> I don't think I tried any tube magnifier tests at higher (20+ inch
> powers, but I'm not sure...have to check my notes. 
> John Freau