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Found a better way of downloading the books from the University of Michigan. First, I downloaded images, but I can also download the books in pdf format, albeit page by page, which gives a much better quality. It doesn't like downloading more than 1 page a minute or so, so it took quite some time to download the three books by Platt, Lynn and Blackwell.
So, I updated these three books on my server and also added Minorsky's "nonlinear oscillations" from 1962, which appears to be an excellent book and includes some of his work om parametric excitation based on Mandelstam and Papalexi:
Further, it seems to me that the circuit known as "the Tesla switch" is also supposed to be a parametric variation device, a solid state version of Cap's Parametric Electric Machine:
This one has also been built by Chris Carson:
Tuks Unsorted KieknWatTWordt Stuff : Energetic Form Posts
If you can get such an "electrostatic converter" working by mechanically changing the capacitance of an LC oscillator, one should also be able to do this solid state, by switching the capacitor in series/parallel and thus modulating the capacitance that way.
When you want to use large capacitances and thus would like to use polarized electrolytic capacitors, it seems to me that the Tesla switch circuitry may use 4 capacitors instead of 2 in order to avoid problems with electrolytic caps being charged negatively.
If this is correct, one should adapt the switching frequency to the natural LC resonance frequency of the circuit, and the "on time" of each of the series switches should be 25% of the whole cycle.
Macpherson describes this cycle in his book (page 15 and on), whereby the modulation (==switching in the Tesla switch) of the capacitor, the "pumping", needs to occur at twice the natural resonance frequency of the system:
So, I updated these three books on my server and also added Minorsky's "nonlinear oscillations" from 1962, which appears to be an excellent book and includes some of his work om parametric excitation based on Mandelstam and Papalexi:
Further, it seems to me that the circuit known as "the Tesla switch" is also supposed to be a parametric variation device, a solid state version of Cap's Parametric Electric Machine:
This one has also been built by Chris Carson:
Tuks Unsorted KieknWatTWordt Stuff : Energetic Form Posts
If you can get such an "electrostatic converter" working by mechanically changing the capacitance of an LC oscillator, one should also be able to do this solid state, by switching the capacitor in series/parallel and thus modulating the capacitance that way.
When you want to use large capacitances and thus would like to use polarized electrolytic capacitors, it seems to me that the Tesla switch circuitry may use 4 capacitors instead of 2 in order to avoid problems with electrolytic caps being charged negatively.
If this is correct, one should adapt the switching frequency to the natural LC resonance frequency of the circuit, and the "on time" of each of the series switches should be 25% of the whole cycle.
Macpherson describes this cycle in his book (page 15 and on), whereby the modulation (==switching in the Tesla switch) of the capacitor, the "pumping", needs to occur at twice the natural resonance frequency of the system:
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