Re: [TCML] VTTC Curent Draw

["DC Cox" <resonance@xxxxxxxxxxxx>]

Unless the MOTs are exact models, you will experience circulating currents
in the MOTs.  If mismatched by a certain value these
circulating currents will draw excessive wall current.

Dr. Resonance




On Wed, Sep 24, 2008 at 8:12 AM, Phillip Slawinski <pslawinski@xxxxxxxxx>wrote:

> I've been tinkering with my 833C for several weeks now.  Unfortunately
> no matter what I do the thing seems to want to pull 50A at full voltage.
> I'm getting some pretty nice performance out of it now [20-24"] in
> continuous mode @ 100V/50A.  I know the coil is in tune, I've tried
> removing
> turns, and I've tried adding a little capacitance and both of those result
> in shorter raspy sparks.  I don't think the grid is the problem.  I've
> tried
> both CW wound grid coils and CCW wound grid coils.  All my grid coils have
> been 22 turns.  My primary and secondary are both wound CW.
>
> I'm using two large (nearly identical) series wired MOTs which go
> through a doubler consisting
> of a rectifier and 2nF 13kV filter cap.  My tank cap is a 12kV 2nF mica
> transmitting cap.  My grid resistor is 10K, and I have a 2nF doorknob in
> parallel with that.  My primary is 28 turns of 8AWG.  My secondary is 17"
> of
> 26 AWG.
>
> What could be causing this current draw?  Is  the amount of current
> I'm drawing in line with the spark output I'm getting?
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