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US 8,441,334 B2Granted
Electronic circuit and electronic device
AssigneeFujitsu Limited
InventorYoichi Kawano
Life of this patent
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Abstract
An electronic circuit includes a first inductor, a second inductor that is magnetically coupled with the first inductor, induced current flowing through the second inductor by a magnetic field generated by the first inductor, and a current changing part that is connected to the second inductor and is configured to change the induced current that flows through the second inductor.
Claims16
An electronic circuit comprising:
- a first inductor;
- multiple second inductors that are magnetically coupled with the first inductor, induced current flowing through the multiple second inductors by a magnetic field generated by the first inductor;
- and
- a current changing part that is connected to the multiple second inductors and is configured to change the induced current that flows through the multiple second inductors inductor,
- wherein the multiple second inductors are formed inside the first inductor and have different inner diameters,
- wherein the current changing part includes a switching part that switches the induced current flowing through each of the multiple second inductors to zero or a predetermined value other than zero so that inductance of the first inductor changes stepwise.
3 more elements
Dependencies are inferred from the claim text.