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RE: New pics and scope waveforms

Richie,
Verrry nice presentation. Great work. Thanks for the effort.

One befuddlement:
The Secondary is referred to as being parallel resonant.
At parallel resonance, voltage is minimum across LC 
  and minimum current is sourced from a parallel generator.

In a classic TC, Primary energy and its loss resistance
  is coupled as a low impedance series generator into the Secondary,
  effecting a Series Resonant condition.
  The generator current is maximum (requiring a low Z source),
   limited by Rdc_inductor+SeriesEquivCoupledPri&ArcLoad,
   the LC junction (top of Sec) voltage is maximum at resonance.

   Discharges represent resistance in parallel with both Sec L & C,
   that can be represented as an equivalent Sec series resistance.

Comment ?  
Am I confused ? perhaps series=parallel depending on how viewed ?

The Primary LC is parallel resonance since energy is provided
  in parallel from precharged Pri Cap prior to a brief switch closure
  to transfer stored energy.
  When the switch is open the generator charges the Cap in 
  a dormant, not part of the resonant period, isolating its losses (?).

Perhaps the confusion is due to the impulse excitation of TC's Vs continuous
 nature of the generator (signal source) so a comparison loses meaning ?

Help ?

Regards, Dale

-----Original Message-----
From: Tesla List [mailto:tesla-at-pupman-dot-com]
Sent: Wednesday, December 08, 1999 5:40 PM
To: tesla-at-pupman-dot-com
Subject: New pics and scope waveforms

Original Poster: "R.E.Burnett" <R.E.Burnett-at-newcastle.ac.uk> 

Hi coilers,

Just a quick message to say that I have added some new pictures to my
web site. These include photos of my 4" coil being tested up to 1800
watts, and two AVI movie files which can be downloaded.

I have also posted a number of oscilloscope traces obtained by
"scoping" a real coil operating in one-shot mode.  These traces show
the secondary voltage ringup, notches, and ringdown over various
time frames.

There is one trace for corona only,  and another which shows the
pronounced effect of an ARC TO GROUND.  Enjoy !

	www.staff.ncl.ac.uk/r.e.burnett

Merry Christmas to all.  Take care,

						Cheers,

						- Richie,