Magnetic field generating device with several resonant circuits has series circuit of first winding, resonance capacitor(s), variable inductance(s) or capacitance(s), second winding(s)

摘要

The magnetic field generating device has at least two resonance circuits, each with a winding and a resonance capacitor and fed by a feed circuit. The device has a series circuit of a first winding, at least one resonance capacitor (7), at least one continuously or fine-stage discretely variable inductance (16) or capacitance and at least a second winding (2).