Method and apparatus for charging an electrically chargeable device utilizing resonating magnetic oscillations in the apparatus

A method for charging an electrically chargeable device, comprising:

• driving a first coil with an alternating voltage, the first coil wound on or around a first portion of a core structure common to each of a first magnetic flux circuit in the core structure and a second magnetic flux circuit in the core structure,
• wherein driving the first coil with the alternating voltage causes a second coil to generate a charging current for the electrically chargeable device, the second coil being wound on or around a second portion of the core structure that is included in the first magnetic flux circuit and not included in the second magnetic flux circuit, and wherein:
• a first magnetic reluctance of the first magnetic flux circuit is less than a second magnetic reluctance of the second magnetic flux circuit when the first coil is driven with a first half-cycle of the alternating voltage;
• the first magnetic reluctance of the first magnetic flux circuit is greater than the second magnetic reluctance of the second magnetic flux circuit when the first coil is driven with a second half-cycle of the alternating voltage;
• and
• no coil is wound on or around any portion of the second magnetic flux circuit that is not included in the first portion.

A method for manufacturing an apparatus for charging an electrically chargeable device, comprising:

• providing a core structure comprising:
• a first portion common to each of a first magnetic flux circuit in the core structure and a second magnetic flux circuit in the core structure;
• and
• a second portion included in the first magnetic flux circuit and not included in the second magnetic flux circuit;
• winding a first coil on or around the first portion of a core structure;
• and
• winding a second coil on or around the second portion of the core structure, wherein:
• a first magnetic reluctance of the first magnetic flux circuit is less than a second magnetic reluctance of the second magnetic flux circuit when the first coil is driven with a first half-cycle of an alternating voltage;
• the first magnetic reluctance of the first magnetic flux circuit is greater than the second magnetic reluctance of the second magnetic flux circuit when the first coil is driven with a second half-cycle of the alternating voltage, the second portion included in the first magnetic flux circuit and not included in the second magnetic flux circuit;
• and
• no coil is wound on or around any portion of the second magnetic flux circuit that is not included in the first portion.