mechanical circuits

[trevorjohnson83]

I built a mechanical AC circuit by comparing a wind fan to a magnet. I spin the base of the wind fan so that it alternates its push/pull energy on a circuit of air. The alternating air pressure could be transformed at any point in the circuit into electricity in a number of ways. With very little like .1 percent energy loss to heat and maybe up to 90% efficiency between the first motor for the fan and the second generator at the other end of the circuit, could mechanical circuits be needed in any practical applications you can think of?

 

[badger2]

It would be interesting to see a diagram.