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Originally Posted by XXShadowXX
i don't believe that the energy that is lost in the 40% transmission lose is lost to the frame i think that the energy is lost just to space
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There is plenty of energy lost to free space, because the magnetic coupling between the two coils is inefficient. That'll put an upper limit of about 60% on your efficiency considering only the coils.
In addition to that, the stray magnetic fields (of which there will be plenty) will pass through parts of the frame, and those fields will generate currents in anything that's made from a decent electrical conductor, like aluminum or steel. This is not speculation on my part, it's solidly grounded in electromagnetic theory. In fact, it's the same effect that makes your desired power transfer work - the changing magnetic field inducing a current in the metallic wire of the second coil - but it's the stray magnetic field acting somewhere you don't want it to.
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Please provide the rule which would disallow a custom circuit (inverter) that would change DC to a very specific AC frequency. I do not believe you will find one.
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I don't think there's anything in
FIRST rules prohibiting converting DC to AC, but transmitting it to another point through the air violates the
FIRST-only radio rules.
- Steve