Re: [TCML] Sword like dischare in CW mode, VTTC

[futuret@xxxxxxx]

Hi Jim,

When the plate voltage is doubled, the plate current will tend to
double also, if the tank impedance is left unchanged ( assuming
the components can handle this extra power)  This will
cause the system to process four times the power and give
twice the spark length.

If you are refering to the level-shifting (AC doubler) circuit,
this runs the coil at the same 60 PPS rate that it
would run at without the AC doubler.  Sometimes this might burn
up a tube without using staccato, depending on the tube specs, and
the power input.  I suspect that some folks using staccato never
run at 60 PPS.  Many of the staccato boards in use have 30 PPS
as their lowest frequency.  To get 60 PPS, the staccato circuit
needs to be switched off (not just set at the fastest setting).

The staccato mode when set to slower rates can produce the
solitary sword-spark.  This can be seen at my website.  This type
of spark appearance cannot be produced at higher pulse rates.  The 
higher
pulse rates can sometimes produce spikey sword-like sparks, but
multiple sparks will be seen, not a solitary spark.

   http://futuret.110mb.com

John


-----Original Message-----
From: Jim Mora <wavetuner@xxxxxxxxx>
To: 'Tesla Coil Mailing List' <tesla@xxxxxxxxxx>
Sent: Sat, Jun 20, 2009 5:09 am
Subject: [TCML] Sword like dischare in CW mode, VTTC



Hi Coilers,



What are the advantages/disadvantages of using a half wave multiplier 
AND
using the staccato control circuitry? (clearly the duty cycle is way 
down
-.5 - staccato freq) or pushing graphite in CW and running the staccato
circuit only.



I think we tend to forget that doubling the voltage halves the current 
even
in Full Wave doublers. Clearly there is more available power in CW at 
plate
potential and a stiff current delivery; but, are the tubes unduly over
exerted? I guess Dr. Spark maybe had it right by having the ability to
switch both in and out. I wonder what he is up to with a 7200v pig.



Jim Mora

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