The switch killer

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what about physically moving a dielectric stab between two plates back and forth using a pendulum .. no eddy currents from dielectrics.. for small angles there's little friction

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If the capacitance is reduced by a factor of 100 than you get 100x increase in energy.... All it consumes is heat,,,, This certainly mean over unity possibility.

If you consider the mass of the capacitor very small the energy input will be equal to the initial charge + the heat...

Why don't we use this concept for nuclear plants?

I'm thinking that if we could have a material that is both magnetic and dielectric forming a capacitor and at same time the nucleus of a transformer. Than if the electric field increase the magnetic permitivity and conversely if the magnetic field increase the dielectric permitivity... Energy could be generated forever. Probably the prototype would blow up because no proper load attached to it.. .

This would require that this material is made up on laminates and that this laminates must be metalized to form a stack of paralel capacitors ....The capacitor is connected in parallel with a coil wound around itself, so when the current is max the capacitance is max so more charge enter easily later the magnetic field reduce and the capacitance decrease raising the energy which is than discharged back to the coil but at this point the inductance is decreased too thereto increasing the speed of the discharge.... and so on...

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If a such capacitor could be invented than energy would be endless...

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that's nice but if the inductance is decreasing the max magnetic field stored in the inductor decreases and the max change in the dielectric permitivity decreases so the system will stop function or am I saying smthing wrong?there are materials that are dielectric and magnetic..Fe3O4 but how will this work ?

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If you consider that the circuit is a lc parallel resonant circuit you have that when the capacitor is charged E field max the inductance must be small so to have ability to charge the coil with max current. The smaller is the reactance the greater the current thus the greater is the energy going in there. When the capacitor is fully discharge the inductance now is a maximum and the amps are discharged at a greater energy level but now that the magnetic field is high the dielectric must be maximum too so it can discharge more current into the capacitor when the magnetic field is vanishing the dielectric constant again become smaller increasing the energy of the charge in the cap.

It needs a small gain per cycle to  become self sustained oscillation because it gains in both ways. at twice the frequency rate.

Seems a good idea to you?

To make a such material with both ways gain may be hard but maybe to make a one way could be far easier..

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it seems very interesting here are a few thoughts

After a while the system will stop because the dependance of these parameters is not linear so it needs a proper load to keep it generating if it works and there is extra energy stored both in the coil and the capacitor

U=Uc+Ul=q^2/(2*L*I*σ*κ*C) +μ0*μ*N^2*A*I^2/2d

σ is a constant that increases the dielectric constant because I couldnt find a btter approximation

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I just thought of something remember that multipactor device that shoots electrons back and forth , if you make it so the plasma ions between the capacitor plates don't touch each other and just go back and forth .Because the ions are aligned according to the electric field the dielectric constant of the device is changed so the energy is changed and because the ions don't hit the plates no work is being done except that the energy is increased of decreased depending on the alignment of the ions. might be possible... but with super fast electronics .  when the plates are switched you can get energy out of the capacitor but there's only nanoseconds to do that .

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http://en.wikipedia.org/wiki/Hysteresis