Abstract: To provide a protection element evens the amount of flux on a fusible conductor and improves variations in fusing characteristics. A protection element is provided with: an insulated substrate; a heating body; an insulating member; two electrodes; a heating body internal electrode; a fusible conductor which is stacked over the two electrodes from the heating body internal electrode and fuses a current path between the two electrodes by heating; a flux coated on the fusible conductor so as to superimpose on the heating body; and a cover member attached to the insulated substrate covering at least the fusible conductor. The cover member has a cylindrical protrusion formed on an inner surface of the cover member so as to contact the flux, and a communication hole communicating with the inner surface side of the cover member from the protrusion is opened on a side wall surface of the cover member.

Abstract: To realize a protection member that makes a flux amount applied on a fusible conductor uniform, and improves variation of fusing characteristics. The protection member includes an insulating substrate, a heating body, an insulating member, two electrodes, a heating body internal electrode, a fusible conductor layered from the heating body internal electrode to the two electrodes, and configured to fuse a current path between the two electrodes by heating, flux applied on the fusible conductor to superimpose with the heating body, and a cover member covering at least the fusible conductor and attached to the insulating substrate. The cover member further includes a plurality of cylindrical projection portions facing the heating body and formed on an inner surface of the cover member to be in contact with the flux.

Abstract: A receiver apparatus includes: a main unit device; and a junction cable transmitting one or both of signal and electric power between the main unit device and an external device. The junction cable is a multicore coaxial cable having a plurality of core wire cables and a covered wire covering the plurality of core wire cables, and only the covered wire is cut locally so that the covered wire is divided into a main unit device-side covered wire and an external device-side covered wire. The main unit device transmits one or both of the signal and electric power by the core wire cable, and the main unit device-side covered wire or the core wire cable is connected to an antenna input port of a built-in tuner, and the main unit device receives a desired broadcast wave with the tuner using a high-frequency signal induced in the main unit device-side covered wire or the external device-side covered wire.

Abstract: A receiver apparatus includes: a main unit device; and a junction cable transmitting one or both of signal and electric power between the main unit device and an external device. The junction cable is a multicore coaxial cable having a plurality of core wire cables and a covered wire covering the plurality of core wire cables, and only the covered wire is cut locally so that the covered wire is divided into a main unit device-side covered wire and an external device-side covered wire. The main unit device transmits one or both of the signal and electric power by the core wire cable, and the main unit device-side covered wire or the core wire cable is connected to an antenna input port of a built-in tuner, and the main unit device receives a desired broadcast wave with the tuner using a high-frequency signal induced in the main unit device-side covered wire or the external device-side covered wire.

Abstract: A PDA includes a printed-circuit board on which at least one printed antenna pair having two chip-like printed antennas, which receive linearly polarized signals and are disposed along axes orthogonal to each other, is mounted. In each of the printed antennas, an open end is formed of at least two antenna conductors separated from each other. Besides, in the printed-circuit board, a ground required by one or plural other modules is disposed so as to surround a surrounding area of at least three sides of four sides forming a rectangular section in each of the printed antennas, and each of the printed antennas is disposed and mounted so that a remaining one side faces an edge portion of the printed-circuit board. While the PDA can receive circularly polarized signals very effectively, the degree of freedom in layout is greatly expanded and miniaturization can be realized.

Abstract: A PDA includes a printed-circuit board on which at least one printed antenna pair having two chip-like printed antennas, which receive linearly polarized signals and are disposed along axes orthogonal to each other, is mounted. In each of the printed antennas, an open end is formed of at least two antenna conductors separated from each other. Besides, in the printed-circuit board, a ground required by one or plural other modules is disposed so as to surround a surrounding area of at least three sides of four sides forming a rectangular section in each of the printed antennas, and each of the printed antennas is disposed and mounted so that a remaining one side faces an edge portion of the printed-circuit board. While the PDA can receive circularly polarized signals very effectively, the degree of freedom in layout is greatly expanded and miniaturization can be realized.