Abstract: A resistor network for terminating active electronic circuits such as stub series terminated logic and emitter coupled logic circuits. The network has a substrate with top and bottom surfaces and a common via extending through the substrate. Several resistor pairs are located on the first surface surrounding the common via. Each resistor pair has first and second vias. Resistors are connected between the first and second vias. Several solder spheres are located on the bottom surface. Each of the solder spheres are electrically connected to one of the first, second or common vias.

Abstract: An electronic device includes two or more conductive polymer layers sandwiched between two external electrodes and one or more internal electrodes.

Abstract: A rotary switch includes a switch housing formed with a plurality of barriers. The barriers are formed with retention notches such that two wires of an electrical cable can be securely retained in the switch housing.

Abstract: In a method of magnetizing a material of a permanent magnet portion provided in a rotor for a permanent-magnet motor, the material of the permanent magnet portion is embedded inside the rotor body, while the permanent magnet material has anisotropy in a direction penetrating the permanent magnet portion in section, and then the rotor is incorporated in a magnetizing unit and held in a rotatable manner, and the permanent magnet material is magnetized by flowing a magnetizing current through windings under the condition that the rotor is rotatably held in the magnetizing unit. Thus, the permanent magnet material is completely magnetized in a normalized direction, and even if the rotor is shifted from the normalized position, the rotor is retained back to the normalized position by a magnetic torque.

Abstract: A method of fabricating a monolithic chip varistor includes the steps of preparing a varistor body including a plurality of varistor layers and at least one pair of internal electrodes; forming a first layer for each of a pair of external electrodes by applying a metal component and a glass component to an exterior portion of the varistor body, followed by heat treatment; forming a second layer for the external electrode on the first layer by applying a glass component, followed by heat treatment; forming a third layer for the external electrode on the second layer by applying a glass component that is different from the glass component used for forming the second layer, followed by heat treatment; forming a fourth layer for the external electrode on the third layer by applying a metal component that is different from the metal component used for forming the first layer, followed by heat treatment under the same heat treatment conditions as those used for the formation of the first layer; and forming a fifth

Abstract: A blank formed from electrically conductive sheet material defines a continuous conductive path which includes two terminal ends and at least three loops disposed along the path. The blank is foldable at preselected folding locations on the path to position the loops in overlying relation to one another, and the blank is preferably formed with the loops disposed along the conductive path in substantially the same plane. The blank is used to form a multi-turn planar winding for a magnetic device such as, for example, an inductor or transformer which may be incorporated into electrical circuits such as power supplies. The planar magnetic device provides a low overall volume and profile, as well as a substantially higher volume or surface area of conductive material per turn of the winding compared to conventional wire or etched windings to provide a higher current carrying capacity and fewer turns compared to conventional windings.

Abstract: A bar-type coil for ignition systems, in particular, for as an ignition coil in internal combustion engines of motor vehicles, is designed to minimize the interference voltage produced by the ignition processes. The bar-type coil has a core, designed as an I-core, a tubular magnetic return plate, and a primary terminal. Mounted in the primary terminal is, in addition to other elements, a first contact element, which is electrically connected to frame potential. The first contact element is part of a line bar, which is electrically connected via a resistance element or via a laminated strip to the tubular magnetic return plate, so that the interference voltage produced is diverted to frame potential. The bar-type coil may be used in automobile manufacturing.

Abstract: An electric switch having fixed contacts and rotary movable contacts in pairs. The movable contact have a central portion coupled to a rotary member and end portions adapted to contact the fixed contacts. The end portions extend from the central portion at an angle. The movable contact pairs lie in substantially the same plane.

Abstract: A robust optoelectronic transceiver module which provides for static discharge and is quick, easy, and inexpensive to manufacture. The transceiver module has a main housing which consists of a potting box with potting material inserted therein. In addition, a circuit board is encased by the potting material. The circuit board has an optical subassembly mounted thereon. The optical subassembly extends outside of the potting box through a recess. Correspondingly, a recess cover is provided for forming a liquid tight seal between the recess cover, the potting box, and the optical subassembly. Furthermore, the module provides electrically conductive latches which are conductively connected, via tabs for forming an electrical connection, to a grounded structure, such as a computer chassis.

Abstract: a A positive OFF toggle mechanism 402 is disclosed for a circuit breaker having “ON”, “OFF,” and “TRIPPED” conditions and corresponding handle positions. The circuit breaker 10 includes a pair of contacts 44, one of which is coupled to an operating mechanism 40 having a pivoting member 13. The positive OFF toggle mechanism 402 includes a lower toggle member 404 having a first end 412 operatively coupled to the contact 44 coupled to the operating mechanism 40 and a second end 408 coupled to a toggle pivot pin 416a; an upper toggle member 410 having a first end 412 coupled to the toggle pivot pin 416a and a second end 408 in operative contact with a toggle pin mounted on the operating mechanism 40.

Abstract: The PTC thermistor material of the invention comprises a matrix phase and electrically conductive phases substantially uniformly dispersed in the matrix phase, said conductive phases having a resistivity lower than that of the matrix phase, and has a resistivity changing sharply in the vicinity of the melting point of the conductive phases. The matrix phase is made up of any one of a polycrystalline ceramic material, a glass-polycrystalline ceramic composite material, a glass, a crystallized glass, and a polymer material, and the conductive phases are made up of a metal containing bismuth as a main component. It is thus possible to achieve a PTC thermistor material which can be controlled in terms of various properties such as the temperature at which PTCR property becomes available and the rate of resistivity change and so can be applied to circuit parts through which large currents pass in a normal operation state.

Abstract: An electronic component is provided wherein the winding center line (Y) of a coil 72 buried in a rectangular-parallelepiped-shaped chip 71 is set on a straight line joining the central points of a pair of square opposed end surfaces of the chip where terminal electrodes 73a and 73b are formed, wherein the coil 72 is arranged so that the winding locus of the coil 72 as seen in the direction of the winding center line is located line-symmetrically around each of any two crossing straight lines crossing the winding center line (Y) of the coil 72 perpendicularly, and wherein leadout conductors 74a and 74b each joining the end of the coil and the terminal electrode 73a and 73b are located at the respective ends of the chip on the winding center line of the coil 72. Thus, this electronic component includes the coil that prevents the inductance from being changed by the mounting orientation.

Abstract: A tool for retrieving metal objects from a wellbore has a plurality of magnet assemblies spaced longitudinally along a tool body. Each magnet assembly has a plurality of magnet members, which can be arcuate or longitudinal, covering a majority surface area of the tool body. In the embodiment of the invention having longitudinal members, magnet protectors are secured immediately adjacent to a corresponding magnet member for deflecting striking force of the metal particles being attracted to the magnet during rotation of the tool. A trap space if formed between the magnet and an adjacent magnet protector for retaining more metal particles within the magnet assemblies.

Abstract: A time switch has a resetting, movable switching member on which there is provided a suction cup which can be pressed against a counterpart body. The cross-section of an air inlet opening (9) into the reduced-pressure space between the counterpart body and the suction cup when pressed against the counterpart body determines the switching time and is preferably adjustable. A venting opening with which a removable closure element is associated additionally opens into the reduced-pressure space.

Abstract: To drastically increase output energy generated by means of an electromagnetic function in a small-sized ignition coil apparatus having a plurality of magnetic circuits arranged around and coaxially with a hole for passing therethrough a shaft.

Abstract: An electromagnetic relay has an iron core, an armature, a coil wound around the iron core, a yoke, a hinge spring, and a joining structure. The yoke is fastened rigidly to the iron core and has an engaging hole and a fitting portion. The hinge spring is used to support the armature rotatably on the yoke, and the joining structure is used to join the hinge spring to the yoke in the electromagnetic relay. The hinge spring has a tongue and a dish-shaped portion, and the yoke has an engaging hole and a fitting portion for engaging with the tongue and the dish-shaped portion. The hinge spring is joined to the yoke by inserting and fitting the hinge spring into the yoke. This structure serves to simplify the process of assembling the hinge spring to the yoke and drastically reduce the number of assembling steps required.

Abstract: An integrated circuit containing a resistor and the resistor per se. The circuit includes a substrate (2), a semiconductor resistor (3) on the substrate and a layer of electrically insulating material (5) disposed over the substrate and the semiconductor resistor having at least one contact (11, 13, 15) extending therethrough to the semiconductor resistor, the contact having an electrical path therein extending to and forming an interface with an end portion of the semiconductor resistor. The semiconductor resistor has a semiconductor resistor body, preferably of doped polysilicon, having one of a positive or negative temperature coefficient of resistance and a resistor head. The resistor head consists essentially of the electrical path which is metal interconnect, the contacts and then interface to and from the resistor body and in contact with the resistor body, the resistor head having the other of a positive or negative temperature coefficient of resistance.

Abstract: The electrical connector includes a connector housing, at least one terminal, and an elastic member. The connector housing has at least one holder arm for receiving the terminal and has first and second insertion spaces. The terminal has an electrical contact portion that contacts a terminal connection portion of a circuit board. The elastic member is inserted into the second insertion space so as to push the holder arm toward the first insertion space against the deflection of the holder arm due to insertion of the circuit board. The first and second insertion spaces are defined to have the holder arm between within the connector housing. The electrical contact portion of the terminal can come into electrical contact with the terminal connection portion of the circuit board when the first insertion space has received the circuit board. The connector having such configuration can complement the terminal even if there is a warp or deformation in the circuit board.

Abstract: A keypad with individual keys made from transparent plastic is proposed where the individual keys are connected to a guard. The guard has means of fastening the guard and the individual keys to a housing and a label which can be written on can be inserted between the housing and the guard.

Abstract: A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The two longitudinal end corners and faces of the core are covered by respective buffer members. The inner circumferential corners of the outer core is supported by ring members. Some of the members disposed radially inside and other members disposed radially outside of the inside members are held slidably to each other in the ignition coil. The spools are made of resin containing a rubber in excess of 5 weight percent and reinforcing materials. The resin insulator contains a flexible material.