摘要:
A portable electronic device includes a circuit board and an antenna coil installed on the circuit board. The antenna coil includes a magnetic core and a coil wound at either side of an unwound portion. The winding direction of the coil is changed at either side of the unwound portion. When the length of the magnetic core is defined as X and the distance between two intersecting points at which a virtual line formed by projecting the central line of the magnetic core onto the circuit board intersects the outer periphery of the circuit board is defined as Y, the antenna coil satisfies Y≧X≧0.8Y.
摘要:
A portable electronic device includes a circuit board and an antenna coil installed on the circuit board. The antenna coil includes a magnetic core and a coil wound at either side of an unwound portion. The winding direction of the coil is changed at either side of the unwound portion. When the length of the magnetic core is defined as X and the distance between two intersecting points at which a virtual line formed by projecting the central line of the magnetic core onto the circuit board intersects the outer periphery of the circuit board is defined as Y, the antenna coil satisfies Y≧X≧0.8Y.
摘要:
A portable electronic device includes a circuit board and an antenna coil installed on the circuit board. The antenna coil includes a magnetic core and a coil wound at either side of an unwound portion. The winding direction of the coil is changed at either side of the unwound portion. When the length of the magnetic core is defined as X and the distance between two intersecting points at which a virtual line formed by projecting the central line of the magnetic core onto the circuit board intersects the outer periphery of the circuit board is defined as Y, the antenna coil satisfies Y≧X≧0.8Y.
摘要:
A portable electronic device includes a circuit board and an antenna coil installed on the circuit board. The antenna coil includes a magnetic core and a coil wound at either side of an unwound portion. The winding direction of the coil is changed at either side of the unwound portion. When the length of the magnetic core is defined as X and the distance between two intersecting points at which a virtual line formed by projecting the central line of the magnetic core onto the circuit board intersects the outer periphery of the circuit board is defined as Y, the antenna coil satisfies Y≧X≧0.8Y.
摘要:
A spiral coil conductor defining its winding central section as a conductor opening section is formed on a flexible substrate. The flexible substrate has a U shaped bend along a line passing through the conductor opening section so as to envelop a magnetic material core. The magnetic material core is arranged in a state where its end face faces the bend of the flexible substrate, and the magnetic material core includes cut shapes provided at a portion of the end face. The portion at the end face faces coil conductor sections at the bend of the flexible substrate, and the cut shapes separate the portion apart from the coil conductor sections.
摘要:
In a filter device, at least one electrically conductive leaf member is mounted on a coupling loop by soldering or the like. By bending the conductive leaf member and adjusting the bending angle, the number of magnetic lines of force to be blocked, that is, the degree of magnetic coupling, is controlled. Therefore, when the mounting position of the leaf member is predetermined, the parameter of adjustment can be limited to the bending angle, and the adjustment is thereby facilitated.
摘要:
This disclosure provides a horizontal radiation antenna including a grounded conductor plate on the back surface of a multilayer substrate, a radiation element to which a microstrip line is connected on a front surface of the multilayer substrate, and a passive element on an end portion side of the multilayer substrate compared with the radiation element. An intermediate grounded conductor plate is provided within the multilayer substrate between insulation layers and faces the microstrip line. The intermediate grounded conductor plate defines a notch portion whose end portion side is open. The intermediate grounded conductor surrounds the radiation element and the passive element in the notch portion. The intermediate grounded conductor is electrically connected to the grounded conductor plate.
摘要:
A production method of a base plate for a disk drive made by aluminum die casting which can reduce scattering of particles and minimizes particle contamination is provided. The production method of a base plate for a disk drive includes a forming step for forming a base member by aluminum die casting, a coating step for coating the base member with a resin film, a machining step for removing a part of the resin film and a surface layer of the base member in order to expose the aluminum surface, a pretreatment step for immersing the base member with the exposed aluminum surface in a pretreatment solution containing no fluoride, and a metal film forming step for coating the exposed aluminum surface with a metal film.
摘要:
A technique for evaluation of the strength of a spot welded portion of a panel is provided. A stress value at the welded portion of the panel is calculated by a stress analysis according to a FEM using the elements, and then the strength of the welded portion is evaluated based on the stress value at the welded portion. A portion in the proximity of the spot welded portion is divided, with a central portion of the spot welded portion registered with a nodal point of the elements, into a central element and plural concentric ring-like elements from the center side provided by the central portion of the spot welded portion. Thereafter, the plural concentric ring-like elements are individually divided in a circumferential direction each into a plurality of portions to form the elements. Then, the strength is evaluated based on the stress value of the second ring-like element.
摘要:
At startup, a main CPU renders and copies various types of unique parameters stored in an SRAM card corresponding to an ID unique to endoscopes to DPRAM and SDRAM and enables the endoscopes to be used with these parameters. Also in the event of desiring to change the set parameters, the user requests a change via an HM, whereby the changed parameters are copied to the SDRAM via the DPRAM, and electrically-operated curving actions of the endoscope can be performed with the changed parameters.