Abstract: The present invention is directed to a photo-voltaic apparatus comprising a photo-voltaic module having a plurality of photo-voltaic cells, and an inverter for converting a direct current output generated from the photo-voltaic cells into an alternating current and outputting the alternating current, the inverter being mounted on a surface opposite to the light receiving surface of the photo-voltaic module with a clearance provided therebetween, so that heat self-generated by the inverter can be efficiently radiated, and heat from the photo-voltaic module is not transferred to the inverter.

Abstract: The present invention relates to a magnetoresistive head having a spin valve MR film for use in a magnetic sensor, a magnetic head or the like. Of two ferromagnetic layers divided by a nonmagnetic metal film, at least ferromagnetic layer on the side being in contact with an antiferromagnetic layer is formed by a cobalt-nickel-iron alloy including at the rate of 5 to 40 atoms % of a nickel and 30 to 95 atoms % of cobalt.

Abstract: A power-supply system involving system interconnection includes a plurality of AC modules, each of which includes a solar cell module and an inverter unit which outputs a single-phase alternating current. The AC modules are connected to the single-phase three-wire distribution line such that the number of AC modules connected to the outer conductor R is the same as the number of AC modules connected to the outer conductor T. Each AC module has three junction pole pieces. Adjacent AC modules are connected to each other via a connecting cable connected to the junction pole pieces. Each AC module has a change-over circuit so as to be selectively connected to one of the outer conductors R or T. The power-supply system further includes an independent operation control device for independently operating the AC modules when the connection between the AC modules and the commercial electric power system is cut.

Abstract: A magnetoresistive head in which an antiferromagnetic material having superior corrosion resistance is used is disclosed. In the magnetoresistive head, a pair of anti-ferromagnetic layers 24a and 24b are formed while contacting with a soft magnetic layer 23, and the antiferromagnetic layers 24a and 24b are made of a PdMn film.

Abstract: A magnetoresistive head used for reading information signals from a magnetic recording medium using a spin valve magnetoresistance effect, comprises a first ferromagnetic layer and a second ferromagnetic layer both are separated by a first nonmagnetic metal layer, a hard magnetic layer formed so as to contact to the second ferromagnetic layer, and a third ferromagnetic layer formed on the hard magnetic layer via a second nonmagnetic metal layer for shutting off exchange coupling and coupled to the second ferromagnetic layer and the hard magnetic layer by static magnetic combination.

Abstract: A photosensor comprises a frame for shielding of light having a front window and a back entrance, and a photoelectric conversion device including a transparent substrate on a front face thereof. The photoelectric conversion device is fitted in the frame through the back entrance to cause the substrate to face the window and is fixed by one or more stop portions formed by deformation of a surrounding end portion of the back entrance.