Re: [TCML] Tube coils structure

[futuret@xxxxxxx]

Jim,

I built a tube coil that gave 36" sparks and used (4) 833A tubes.
It drew about 5600 watts or so without staccato.  Actually
I got the spark up to about 40" one time, but that's when
a large tube arc occured and damaged a tube.  I used a 5kVA
pole pig to power the coil.  This VTTC was not push-pull,
but had all the tubes in parallel.  I never tried the single large
tube concept for comparison, so I can't comment on that.

   http://futuret.110mb.com

John
-------------


-----Original Message-----
From: Jim Mora <wavetuner@xxxxxxxxx>
To: 'Tesla Coil Mailing List' <tesla@xxxxxxxxxx>
Sent: Wed, 8 Oct 2008 7:16 pm
Subject: [TCML] Tube coils structure



Hi All,



It has been recently stated that one serious transmitter tube is better 
than
multiple lesser tubes say (4) 833a's. I can see the benefits but then 
again
all eggs are in one basket. Has anyone built a push pull quad 833a 
coil? The
plate transformer becomes an issue; but, a 5+kv pig should easily do. 
What
say you? Should I look for a mongo transmitter triode (which I thought a
833a was). I have 40 amps worth of 10volt filament transformers.



This is down the line for me, though I'm curious what the collective 
list
thinks.



Thanks,

Jim Mora

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