Thanks for the tip about the gyrator! This is turning into a learning experience for a non EE like me.Each parallel mesh lies on an equipotential plane in the dielectric. All you are doing is building a stack of higher value capacitors in series that must be switched.
You might consider a variable capacitance multiplier, or maybe using something like a gyrator to simulate a capacitor.
I'm not looking so much for a variable capacitor, but to simulate a "super-dielectric", using applied potentials to force a capacitor soak up a huge amount of charge, by canceling any field within the plates.
Why do I really need a variable capacitor?
I have an intuitive hunch about a possible circuit, that is based on Kelvin's Thunderstorm apparatus.
It might be able to soak up the positive charges in the atmosphere. I have to sit down and try to sketch out this vague idea.
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