Patent ID: 6265789
Filing Date: 2001-07-24
Classification: H01F,H01M,H02J,Y02E

Abstract:
An electronic apparatus for performing a power or signal transmission between two devices, comprising:a first device having a first coil; anda second device having a second coil, the first and second coils being arranged in mutually facing positions;wherein an inner diameter of the first coil and an inner diameter of the second coil differ by at least 1 mm;wherein a ratio of the inner diameter of the first coil to an outer diameter of the first coil and a ratio of the inner diameter of the second coil to an outer diameter of the second coil are each greater than or equal to 0.3 and less than or equal to 0.7; andwherein power transmission or signal transmission between the first and second devices is accomplished through electromagnetic coupling of the first and second coils.