Abstract: A contactless power transfer apparatus includes an E-class amplifier having a coil configured to store an amount of energy for use in contactless power transfer and a field-effect transistor for controlling a current that flows in the coil, and an arrester provided between a drain terminal and a source terminal of the field-effect transistor and configured to be operated in response to application of a voltage having a voltage value lower than an absolute maximum rated voltage value between the drain and the source of the field-effect transistor.

Abstract: A cable includes: a core; a first insulating layer that has a property biased toward positive polarity or negative polarity in a triboelectric series and coats the core; an (n+1)-th insulating layer that has a property biased toward a polarity opposite to a polarity of an n-th insulating layer and coats the n-th insulating layer, N being a natural number not less than 2, n being 1, . . . , N?1; a braid that coats the N-th insulating layer; and a sheath that coats the braid.

Abstract: There is provided a secondary coil module receiving supply of electric power via a primary coil by contactless power transfer technique. The secondary coil module includes a core formed of magnetic material, the core having a tubular portion in the form of a tube and a bottom portion formed integral with the tubular portion in such a manner as to close an opening of the tubular portion formed at one axial end portion thereof, a storage battery accommodated within an accommodation space provided inside the tubular portion and configured to be charged by the power via the primary coil and a coil winding disposed outside the core and on the side of the bottom portion of the core.

Abstract: A contactless power transfer apparatus includes an E-class amplifier having a coil configured to store an amount of energy for use in contactless power transfer and a field-effect transistor for controlling a current that flows in the coil, and an arrester provided between a drain terminal and a source terminal of the field-effect transistor and configured to be operated in response to application of a voltage having a voltage value lower than an absolute maximum rated voltage value between the drain and the source of the field-effect transistor.

Abstract: There is provided a secondary coil module receiving supply of electric power via a primary coil by contactless power transfer technique. The secondary coil module includes a core formed of magnetic material, the core having a tubular portion in the form of a tube and a bottom portion formed integral with the tubular portion in such a manner as to close an opening of the tubular portion formed at one axial end portion thereof, a storage battery accommodated within an accommodation space provided inside the tubular portion and configured to be charged by the power via the primary coil and a coil winding disposed outside the core and on the side of the bottom portion of the core.

Abstract: In a contactless power supply mechanism, a power receiving unit for supplying power to an electric device includes a secondary coil and a power supplying unit for supplying power to the power receiving unit includes a primary coil. The primary coil includes a primary core formed of magnetic material and a length of winding wire wounded around the primary core. The secondary coil includes a bar-shaped secondary core formed of magnetic material, a length of winding wire wounded around the secondary core and a magnetic sheet attached to at least one of end faces of the secondary core. The magnetic sheet includes a close-contact portion placed in close-contact with the end face of the secondary core and a curved portion which extends outwards from the close-contact portion beyond an outer edge of the end face and whose normal line has a portion un-parallel with an axial direction of the secondary core.

Abstract: Provided is a compact secondary coil module that can be easily mounted in a terminal device side unit. The secondary coil module whose power for use in charging a storage battery by a contactless charging technique is supplied via a primary coil, includes the storage battery, a charging control circuit controlling charging of the storage battery, a tubular core made of magnetic material and covering an outer circumferential face of at least one of the storage battery and the charging control circuit, and a wire made of conductive material, the wire being connected to the charging control circuit and wound around the outer circumferential face of the core.

Abstract: Provided is a compact secondary coil module that can be easily mounted in a terminal device side unit. The secondary coil module whose power for use in charging a storage battery by a contactless charging technique is supplied via a primary coil, includes the storage battery, a charging control circuit controlling charging of the storage battery, a tubular core made of magnetic material and covering an outer circumferential face of at least one of the storage battery and the charging control circuit, and a wire made of conductive material, the wire being connected to the charging control circuit and wound around the outer circumferential face of the core.

Abstract: In a contactless power supply mechanism, a power receiving unit for supplying power to an electric device includes a secondary coil and a power supplying unit for supplying power to the power receiving unit includes a primary coil. The primary coil includes a primary core formed of magnetic material and a length of winding wire wounded around the primary core. The secondary coil includes a bar-shaped secondary core formed of magnetic material, a length of winding wire wounded around the secondary core and a magnetic sheet attached to at least one of end faces of the secondary core. The magnetic sheet includes a close-contact portion placed in close-contact with the end face of the secondary core and a curved portion which extends outwards from the close-contact portion beyond an outer edge of the end face and whose normal line has a portion un-parallel with an axial direction of the secondary core.

Abstract: A noncontact power supply system includes a power supply device having a primary coil acting as an electromagnetic induction coil for a noncontact power supply system, and a power receiving device having a secondary coil. The primary coil has a primary core and a winding wire. The secondary coil has a secondary core and a winding wire. The primary core includes a base segment, a pair of extension segments, and a pair of opposite segments. The pair of opposite segments are arranged to allow a space to be defined therebetween. The winding wire is wound at least around the pair of opposite segments. The secondary coil is arranged between the pair of opposite segments during power supply. The power receiving device includes a magnetic sheet that is in tight contact with an end surface of the secondary core and has an area larger than that of the end surface.

Abstract: The present invention aims to achieve a high display quality and cost saving while providing a dual function as a capacitive touch panel. A liquid crystal display unit 1 has a liquid crystal display cell 10; and a compensation cell 20, disposed opposite the liquid crystal display cell 11 to improve an optical characteristic of the liquid crystal display cell 10. The compensation cell has a transparent plate 21/22, and a transparent electrode group 28 for a capacitive touch panel. The transparent electrode group 28 is formed at the transparent plate 21/22 to allow the compensation cell 20 to function also as the touch panel.