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Re: Magnifiers

marcus wrote:

M>Yeah, ok I wasnt very clear. I know that the secondary circuit is
M>physically isolated from the primary . Just a slip, I often think
M>of 'isolation transformer', when I think of 1:1 turns ratio trans
M>formers.:) My point was that a Tesla tank allready has high voltage RF
M>current, and that a 1:1 transformation or at least a low transformer
M>ratio between the primary and secondary could provide a much higher
M>base current to 'stimulate' the tertiary than the standard 1:10-20
M>ratio. Do you know the lowest voltage that could properly resonate
M>the tertiary?   

Since the base impedence of a 'free' or extra coil at resonance depends
on its geometry anthe discharge terminal (and can vary over a wide range),
I expect that one would not want to stick with any particular primary 
to secondary ratio. You would want to pick the ratio which gives the best 
impedance match between the driver output and the extra coil to achieve the 
highest power transfer possible. This matching could be quite painful in 
practice, but otherwise you just get power reflected and dissipated back in 
the driver. It might be nice if you could put a variable tap on your driver 
secondary.



Also (not shown) you made a statement to the effect that magnifiers are 
somehow science off the beaten path. To this I would just say that a recent 
issue of an industrial plasmas journal has an article dealing with what we 
call magnifiers. They base driven a free coil 13MHz) inside of a vacuum
chamber to generate reactive plasmas for semiconductor processing! 
Not so offbeat, eh? A guy named Sloan did something similar to generate 
high voltages for his X-ray system in the 30's. He used an ultra simple 
homemade 100kW vacuum tube oscillator to base drive a 10 turn coil at 6Mhz 
and got 800kV under load!! I will find the references upon request.


-Ed