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Re: [TCML] Tube coils structure



Hi John,

I now only have a single 833(C) and a single 833(A).
I have temporarily lashed the 833A in parallel with the
833C (you know I'm gonna use the C tube if I have a
choice ;^) just to see how well the extra tube would
share the load. It does indeed "spread the load". I am
assuming that a "push-pull" setup means the tubes are
wired in series rather than parallel?

--
David Rieben

-------------- Original message -------------- 
From: 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 
> To: 'Tesla Coil Mailing List' 
> 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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