Original poster: "Scott Bogard" <teslas-intern@xxxxxxxxxxx> Hey everybody. Ok, I don't really know, exactly, how a magnifier coil works, but I think it acts like a normal TC (with oober coupling) and drives the "free resonator" at it's resonant frequency, kind of neglecting the resonance of the primary and secondary, so they act mostly like a standard transformer.
Scott, It's often thought that a magnifier works that way, but it really doesn't. Instead the coil has to be tuned to the combined L and C of both the secondary and the resonator. In other words the primary tank has to be tuned to a lower frequency than the resonator alone. The secondary inductance and capacitance figures into the tuning also. Also, the coupling of a magnifier is really about the same as a classic TC. This is because the coupling has to be considered to include both the secondary and the resonator. There's a formula to calculate this which was originally given to me by Antonio De Queiroz. John **************************************See what's free at http://www.aol.com.