Re: Slow Wave Helical Resonator Experiment

In a message dated 98-12-08 05:35:24 EST, you write:

> Original Poster: Terry Fritz <twf-at-verinet-dot-com>


I've never seen it posted on the list, but the Corums used a 24 volt
dc source and and a Ford spark coil buzzer was used as a spark gap.
An oscilloscope was connected directly across the terminating ball to
ground and the voltage waveform recorded is the one you refered to that
shows the 10 times voltage rise.   

I spoke to Malcolm about this some time ago, and he said he was 
familiar with this buzzer technique.  Maybe this technique led to false
results in the Corums tests.  The Corums mentioned the use of the 
buzzer in an unpublished (?) paper intended to be part of a book they
were writing.

I've never seen the Corum's after-quench voltage build-up in my tests.

John Freau

> Hi Antonio,
> 	Many thanks for pointing out my error in assuming the gap stopped
> conducting during a primary current notch.  I have read that paper many
> times and I always just assumed it quenched where all other Tesla coil's
> quenched.  I have a high-speed fine-tip multiple-quench (up to 16 gaps)
> rotary gap here.  I will try to redo this test and attempt to break the
> primary current during the peak of the cycle.  I don't know if I will be
> able to do that or not but I have just about the best equipment available
> to try it with so...  
> 	I ran the situation through my computer model (the computer can quench
> whenever it wants :-)).  The secondary voltage was at zero during the break
> in the primary current and just stayed there.  The primary voltage across
> the gap spiked into the 200kV range as on would expect in breaking the
> primary inductor current but the secondary voltage showed no change.  So
> the computer does not predict what the paper says.
> 	I will see what real testing can determine and report what I can find.
> Thanks,
 >	Terry Fritz >>