Originally posted by vrand
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Thank you. Yes,correct parametric resonance is working like a pump.However mentioned method with changed capacitance in time is hard to realise (need a shutter to screen heat source) . Much easier is to change inductance with synchronization of LC circuit state (at correct moment) - think about it. Like a pump or siphon.Don Smith is telling this all the time - parametric oscillation you must have to extract free energy from ambient source.
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