Below the RLC circuit on the left side by the help of a periodic impulse generator V1 generates periodic damped oscillations with a certain frequency, and the resulting oscillating current couples to the circuit on the right side via the magnetic field. The circuit on the right side is exactly the same with the one on the left(just that it has no source). Here I also set the coupling coefficient as 1. So I(R1) and I(R2) is exactly the same as follow:
Now I change only the capacitance of the capacitor C2 from 10µ to 1000µ and both circuits are affected radically and they pass the same currents as follows:
Finally from the last configuration I reduce the coupling coefficient significantly from 1 to 0.01 and the circuit on the left is not anymore affected from the one on the right side, but the current in the right circuit still follows the same wave shape with the current in the left circuit as follows:
1)If SPICE is correct, in case1 even though there is strong coupling, the natural frequency waveform of both circuits remain the same. In case2 however there is again strong coupling, but this time the waveform of both circuits radically changed. How can this be explained?
2)In case3 when the coupling is very loose, why does I(R2) replicate I(R1) even though the circuit on the right side has different natural frequency?