Total posts : 45366
Ermi I don’t understand how you arrive at the figure of a few hundred ohms. These are my calculations:
N = 1000 x sq. root (L/AL) (where L and AL are in units of mH)
For 17 turns on a ferrite toroid of AL = 6065, I get and inductance of 1.75mH
At 1.6MHz this results in an impedance of 17.6kohms
You talk about the ferrite having an effective lower inductance at 1.6MHz, but I cannot find any reference to that effect. What gives?