Abstract: An electrical device (100, 200) is provided with a tubular metal sheath (110, 210, 250, 260) and with an insulator body (120, 160, 220, 251, 261), which is arranged in the interior of the tubular metal sheath (110, 210, 250, 260) and through which passes at least one tunnel-like opening (tunnel opening) (121, 122, 161, 162, 221, 252, 262). At least one section (131a, 132a, 171a, 172a) of a first electrical conductor (131, 132, 171, 172, 231) is arranged in the tunnel opening (121, 122, 161, 162, 221, 252, 262), in which the cross-sectional geometry of the tunnel opening (121, 122, 161, 162, 221, 252, 262) deviates from a circular shape.

Abstract: A single or multiple cutters are pressed against end surfaces of a resistive element so as to form a plurality of notches in rims of the end surfaces. At this time, notches are formed such that notch depth at the end surfaces of the resistive element toward the axis center is smaller than notch length from the end surfaces of the resistive element to the axis. This allows easy cutting and removal of the resistance wire at the resistive element ends of a coil resistor, etc., and prevention of fraying of a wound wire at the resistive element ends.

Abstract: An electrical multi-layer component includes a body having a stack of ceramic layers, with a top and a bottom. First and second connection surfaces are on the bottom of the body. Electrode surfaces are in metallization layers among the ceramic layers. Via contacts are between metallization layers. At least one of the via contacts is connected electrically to an electrode surface or to a connection surface. An electrode surface connected to one of the connection surfaces, through a corresponding via contact, is a first electrode structure or a second electrode structure. At least one of the first or second electrode structures includes a via contact that has a blind end. A shortest distance between the first and second electrode structures is a vertical distance from the blind end to: (i) a metallization layer above or below the blind end, or (ii) a blind end of another electrode structure.

Abstract: A terminal plate is formed with a wide portion and a narrow portion. The wide portion, to be insert-molded by a housing of a synthetic resin, is opened by an elongate blank hole having an inner peripheral surface parallel with a side shape thereof, thereby forming two divisional parts on the both sides thereof. The divisional part is given by a width s1 narrower than a width s2 of the narrow portion, wherein the total width (s1×2) of the two divisional parts is made equal to the width s2 of the narrow portion. Grooves can be formed on the main and back surfaces of the divisional parts.

Abstract: A ceramic component includes a ceramic body, electrodes applied to the ceramic body, electrical connectors that connect the electrodes with one or both of an external circuit and a voltage source, a substance that connects the electrical connectors to the electrodes, and a casing that covers the electrodes at least partly. The substance is cured and electrically conductive, and contains a precious metal that is not silver.

Abstract: A resistor connector (C) includes a pair of parallel lead frames (1, 1), a resistor (10) with a pair of electrodes (14, 14) and a mold resin (2). Each said lead frame (1) includes a terminal portion (1a) and an electrode connection portion. Said pair of electrodes (14, 14) are electrically connected to respective said electrode connection portions of said pair of lead frames (1, 1) through solder (b). Said mold resin (2) covers said resistor (10) so as to expose said terminal portion (1a, 1a). Said lead frame (1) includes solder flow inhibit means (40, 41) between said electrode connection portion and said terminal (1a) for preventing said solder (b) to flow towards said terminal portion (1a).

Abstract: A high-voltage variable resistor includes a circuit section contained in an insulating casing, a snap-in terminal inserted in a terminal base portion of the casing and connected to an output portion of the circuit section, and an output connecting electrode inserted in the terminal base portion from a direction orthogonal to the snap-in terminal and press-fitted in and connected to the snap-in terminal. The terminal base portion of the casing has an insertion groove for guiding and inserting the snap-in terminal, an insertion hole for guiding and inserting the output connecting electrode, and a relief groove formed on a side face of the insertion groove intersecting the insertion hole. The insertion groove, the insertion hole, and the relief groove are simultaneously formed by a metal mold of the structure to be pierced.

Abstract: Corrosion resistant material is used for lead wires of the thermistor, and an exposed portion of electrodes of the thermistor and a portion surrounding a weld portion of the lead wires are coated with corrosion resistant material. Since the lead wires themselves are made of corrosion resistant material, no corrosion occurs in the welding portion and a cut working portion. Further, the lead wires and the exposed portion of the electrodes are coated with corrosion resistant material. Thereby an electronic device having extremely high corrosion resistivity and hence high durability and reliability is produced, with the result that the electronic device can be used for a long period without corrosion under the heavily corrosive environment, such as sulfur dioxide gas atmosphere.

Abstract: A resistor 1 is used in high-fidelity amplifiers for audio equipment. The resistor 1 includes a cylindrical resistor body 2, a tubular sheath 3 into which the resistor body 2 is coaxially inserted, and a conductive film portion 31a formed on the inside surface 3a of the sheath 3. The conductive film portion 31a faces to a resistance film 22 covering the surface of the resistor body 2 with an annular space 6. An insulating slit 32 is formed at a central point along the resistor axis 1a, separating the conductive film 31 into left and right parts that are electrically isolated from each other. The sheath covering the resistor body 2 prevents distortion of signals in the resistance film 22 caused by extraneous electrostatic induction charges.

Abstract: An electronic part in which insulating tape is adhered to lead terminals which extend from an electronic part unit so that a pitch between the terminals can remain stable and constant. The insulating tape is adhered to portions of the lead terminals in a vicinity of the unit from both sides such that the tape is placed with the terminals therebetween.

Abstract: Measuring sensor to measure a gas, comprising: a housing having an inlet opening for the gas to be measured, a sensor chip located within said housing and having a sensor element at one end area of the sensor chip facing the inlet opening and an electrical connection connected electrically with the sensor element provided at another and, and with at least one contact trace which is electrically conducting, wherein the electrical connection is joined to the contact trace by laser welding.

Abstract: A package (10) has outermost surfaces (12, 13, 14, 16) that form a polygon shape. The body (11) of the package (10) has axial symmetry about an axis (21). A lead (22) exits the package along the axis (21).

Abstract: A heating element having at least one tail is provided for connection to an electrical source. The tail includes an electrically conductive wire with a sleeving around at least a portion thereof. The wire and sleeving are connected to a tubing and crimped for receipt within a connector. The connector is provided to receive the tubing and to connect to the voltage source allowing electric heat to pass through the length of electrically conductive wire and to thereby heat the heating element. The heating section is particularly suitable for pre-heating and post-stress weld stress relieving piping welds.

Abstract: The cartridge heater disclosed has a coiled wire heater element with connected lead conductor wires contained within a metallic tubular sheath. Electrically insulative material insulates and supports the heater element and lead conductor wires within said sheath. The tubular enclosure has one or more folds to define parallel longitudinal heater segments containing the heater element. An outer metallic casing surrounds the heater segments defining a body portion. Lead wires comprised of the metallic sheath and the lead conductor wires extend from the body portion.

Abstract: A high-voltage variable resistor includes a terminal fitment having an increased number of edge elements while being simplified in structure and down-sized. A circuit substrate which includes a circuit pattern having a plurality of electrodes and resistor elements formed thereon is received in a substrate receiving section of an insulating casing. The insulating casing is charged with insulating resin through an opening thereof to form an insulating resin layer on a rear surface of the circuit substrate. Terminal fitments are provided each of which includes a core holding section provided with three or more edge elements biting into a periphery of a core of a lead wire inserted thereinto. The edge elements each are formed between each adjacent two of three or more slits formed at a plate-like section of the terminal fitment so as to radially extend from a center thereof.

Abstract: A high-voltage electronic component including a terminal connection structure capable of connecting a lead wire to a terminal fitment without soldering. An insulating substrate having a resistance element for a variable resistor formed on a front surface thereof and a high-voltage resistor are received in a hollow insulating casing. The insulating substrate is mounted on a rear surface thereof with a terminal fitment. The terminal fitment is formed with a press-fit channel in which a lead wire is press-fitted. Upon press fitting of the lead wire, the insulating casing is formed with an opening, through which insulating resin is charged in the insulating casing to form an insulating resin layer in which the terminal fitment and lead wire are embedded.

Abstract: A high-voltage variable resistor unit capable of simply and positively connecting, to a holder of a high-voltage fixed resistor used as a bleeder resistor, a wire-like terminal inserted into an electrically conductive rubber terminal provided on a side of a fly-back transformer. An insulating substrate which is formed thereon with a resistance pattern including a pair of electrodes respectively connected to first and second lead wires is received in a holder of a hollow shape made of insulating resin. The holder includes a holder body formed with an opening through which the insulating substrate is received. A wire-like terminal formed by being a rigid metal wire is heldly fitted in terminal fitting members provided on an outside of the holder. The terminal fitting members includes at least one terminal fitting member provided a wall of the holder facing the opening of the insulating casing and at least one terminal fitting member provided on one of side walls of the holder adjacent to the wall.

Abstract: A resistor 1 in which at least one resistance film 4 is embedded in a ceramic sintered body 3, glass is diffused into the sintered body 3 to form a glass diffusion layer 6, and both end faces 4a and 4b of the resistance film 4 are respectively exposed to both end faces 3a and 3b of the ceramic sintered body 3.

Abstract: A resistor for a thermal type of flowmeter includes a ceramic substrate, a thin platinum film formed on the surface of the ceramic substrate, and lead wires for connecting the thin platinum film with an external circuit, and is located in a fluid to detect its flow rate. When the resistance value, R (.OMEGA.) , of the resistor for a thermal type of flowmeter is expressed in terms of a function of temperature, T (.degree.C.):R=R.sub.0 (1+.alpha.T+.beta.T.sup.2)where R.sub.0 is the resistance value in .OMEGA. of the resistor for a thermal type of flowmeter at 0.degree. C., .alpha. is the first-order term coefficient of the temperature coefficient of resistance, and .beta. is the second-order term coefficient of the temperature coefficient of resistance, the value of the first-order term coefficient, .alpha., of the temperature coefficient of resistance is at least 3,650 ppm/.degree.C.

Abstract: The film-type electrical power resistor includes a flat ceramic chip on the upper surface of which is screen-printed a resistive film. Terminals (leads) are mechanically and electrically connected to the upper chip surface, the terminals being such that the chip may be positioned by the terminals in a predetermined position in a mold cavity during manufacture of the resistor--prior to introduction of synthetic resin. The synthetic resin forms a molded electrically insulating body that embeds the portions of the terminals that are relatively near the chip, and also embeds the upper portion of the chip, but does not embed the bottom surface of the chip. The relationships are such that the lower chip surface may be engaged flatwise with a flat region of a chassis or heatsink. Accordingly, the chip is a substrate for the film, a heatsink for the film, an insulator maintaining the film electrically insulated from the chassis, and a spacer maintaining the terminals spaced from the chassis.

Abstract: A film-type resistor having a high power rating and a relatively low manufacturing cost. The structural strength of the resistor is derived primarily from a molded body that covers both a film-coated substrate and a heatsink. The heatsink, to which the substrate is bonded in high thermal-conductivity relationship, has an exposed flat bottom surface of relatively large area.

Abstract: A resistor element including a cylindrical ceramic support having two openings open on longitudinally opposite end faces thereof, an electrically resistive layer formed on an outer circumferential surface, a pair of electrical conductors for connecting the electrically resistive layer to an external circuit, each of which has an end portion inserted into a corresponding one of the openings of the ceramic support, and an electrically conductive adhesive filling each opening of the ceramic support, for securing the end portion of the corresponding conductor to the ceramic support. The electrically resistive layer has two integrally formed extensions for covering the opposite end faces of the ceramic support, respectively, and respective inner wall surfaces of the openings of the ceramic support. The conductors are electrically connected to the extensions of the resistive layer by the electrically conductive adhesive filling each opening of the ceramic support.

Abstract: The film-type electrical power resistor includes a flat chip of aluminum oxide, having a resistive film screen-printed onto one of its sides. Leads are bonded to that side and electrically connected to the film, the leads being such that the chip may be cantilevered by the leads in a mold cavity before introduction of synthetic resin into the cavity, and with the lower chip surface spaced above the bottom cavity wall. A molded body is molded in the cavity to fully encapsulate the chip, film, and inner ends of the leads, there being no mold cup around the molded body. The molded body is formed of high thermal-conductivity thermosetting synthetic resin. Provided through the body is a bolthole for clamping of the resistor to an external chassis or heatsink. The space between the bottom surface of the chip and the flat bottom surface of the molded body is a heat-sinking volume formed of the high thermal-conductivity resin; and the bottom surface of such volume of resin is the bottom surface of the resistor.

Abstract: An electrical device in which a first connection element is in electrical contact with a resistive element. The first connection element defines a cavity into which, when the cavity is empty, a second connection element can be inserted. The second connection element, which may be connected to a source of electrical power, is partially within the cavity, makes physical and electrical contact with the first connection element, and protrudes from the cavity. Such devices can be made in a continuous process by a method of the invention. They are particularly suitable for insertion into a circuit board.

Abstract: An improved frame supported resistor grid used for dynamic braking of electric motors is provided. The resistor grid has a metal frame and fan-folded strips of resistance material arranged in columns within the frame. The strips of resistance material are supported by studs affixed to the folds of the strips and the studs are, in turn, supported in ceramic bushing insulators. An intermediate member is affixed to the frame and receives the individual ceramic bushing insulators.

Abstract: A resistor element for determining a parameter, including a ceramic support having a bearing surface, an electrically resistive body formed on the bearing surface of the ceramic support, a conductor or conductors electrically connected to the electrically resistive body, the conductor(s) having a lower thermal conductivity than a conductor made of platinum, and an adhesive for securing the conductor(s) to the ceramic support. The conductor is defined by a lead wire made of an alloy and a covering layer made of a metal which covers the lead wire. The adhesive contains at least one metal of which at least an outer surface of each conductor is formed, so as to increase bonding strength between the conductor(s) and the adhesive.

Abstract: A resistor element for determining a parameter, which includes a ceramic support having a bearing surface, an electrically resistive metallic layer formed on the bearing surface of the ceramic support, and a glass coating covering the metallic layer. The metallic layer has a plurality of pores which extend from an outer surface of the metallic layer to the bearing surface of the ceramic support, each pore having an area which is not smaller than that of a circle having a diameter of 1 .mu.m. An average spacing between adjacent ones of the pores is not larger than 5 .mu.m.

Abstract: A heater assembly for heating a container of corrosive fluid includes a housing adapted to be located in a container of fluid to be heated, a sealed chamber located in the housing, a heater located in the chamber, an electrically conductive sleeve assembly secured to the housing, and a flexible conduit extending from the sleeve assembly and providing a passageway for conductors providing a source of power to the heater assembly. The flexible conduit includes an electrical conductor connected to ground which is located in the sleeve assembly and the sleeve assembly is swaged to compress the sleeve assembly into the electrical conductor to ground to the electrically conductive housing via the sleeve assembly.

Abstract: Respective first end portions of first and second internal electrodes are exposed at respective end surfaces of a varistor body, which is in the form of a rectangular parallelepiped. These end surfaces of the varistor body are covered with low resistance parts which include ceramic material in order to prevent the internal electrodes from decomposition. External electrodes are formed on the low resistance parts, so as, to be electrically connected with corresponding ones of the internal electrodes through the low resistance parts.

Abstract: Small easily removable insert designed for placement in the battery compartment of a battery powered device (becoming part of the circuit of the device when in place) which includes a current/voltage control means and may have sidewalls and dimensions which allow the replacement of a battery or batteries standard to the device by smaller sized batteries.

Abstract: A high-voltage cylindrical film-type resistor has cup-shaped end caps that receive the ends of the cylindrical substrate, each end cap having a convexly-radiused rim that has a radius of at least 1.5 mils in a plane containing the substrate axis. In accordance with the method, the stated radius is achieved by abrading, preferably tumbling.

Abstract: An improved copper sheathed heating element for installation in appliances, such as electric kettles, includes a minor amount of a silicone water-proofing agent admixed with magnesium oxide filler agent prior to the element being annealed. Annealing of the element is carried out at a reduced annealing temperature over an extended duration in order to limit thermal degradation of the additive during the annealing process. The resulting element achieves sufficient ductility for purposes of formation as a kettle heating element, while the insulation value of the element over an extended shelf life is maintained without significant degradation. Preferably, the silicone agent comprises polydimethylsiloxane and is present in the range 0.1 to 0.15 percent by weight.

Abstract: Termination apparatus for elongate heaters which have an outer metal sheath and which are designed for use in hazardous environments. The apparatus comprises a junction box within which the heater is terminated and which has an entry port through which the heater enters the junction box. Secured to the entry port is a connection member comprising first and second compression members which surround a heater passing through the entry port and which define between them a chamber. Within the chamber is a grommet which is composed of lead or another deformable metal. The compression members can be drawn together, thus reducing the size of the chamber between them and deforming the grommet into close conformity with the metal sheath of the heater. In this way, if flames are generated within the junction box, they cannot ignite explosive gases surrounding the junction box.

Abstract: A heating electric wire is provided having a heating portion electrically connected to a lead portion, the heating portion being a bundle of a plurality of elongate, electrically insulating tension members having a heating layer around the periphery of the bundle of tension members, the lead portion being a bundle of a plurality of elongate, electrical conducting wires, at least a portion of the insulating tension members being coupled to at least a portion of the conducting wires in the connection region between the heating and lead portions, the entire assembly having a heat resistant sheath around its periphery.

Abstract: A resistor having a positive temperature coefficient in which a plate-shaped resistive element 1 is incorporated in a tubular envelope 2 between two electrical conductors 3, 4 which are in contact with the resistive element and which project from opposite ends 5, 6 of the envelope. The end face of at least one of the conductors 3 present inside the envelope has raised portions 10 against which the major surface of the plate-shaped resistive element facing said conductor 3 bears so as to obtain a poor thermal conductivity.

Abstract: The invention relates to a termination for a tubular electric heater, comprising a two-piece body of ceramic or high-temperature plastic which is quickly and easily assembled with a metal spade terminal. The two pieces of the body have interfitting parts which align the pieces longitudinally. One of the pieces has a cavity with a tapered entrance portion for receiving a complementarily-tapered portion of the spade terminal, the latter having a tubular portion crimped about the end of the resistance wire. The invention is adapted for use with a rectilinear heater tube, which may be of glass, quartz or a metal such as aluminum, and simular terminations close respective opposite ends of the tube. The resistance wire is disposed within the tube and is in the form of a helical coil which is tensioned on assembly to draw each termination in abutting relation with a respective end of the tube.

Abstract: A lacquer-encapsulated carbon film resistor having a ceramic substrate coated with a carbon film, a silicon nitride layer, an organic lacquer layer and termination electrodes.

Abstract: There is provided a resistance element comprising a cylindrical carrier body, a rectangular bore therein in the direction of the longitudinal axis, a ceramic plate within said bore and securely bound to a flat wall of said carrier body, a thin layer platinum-resistor path with a temperature dependent electrical resistance firmly adhering to the surface of the ceramic plate opposite to that bound to said carrier body, electrical lead wires connected to said resistor path, said lead wires being secured to at least one end of said carrier body by an electrically nonconducting sealing composition and said lead wires passing through said sealing composition to the outside.

Abstract: A sheath heater comprises a pipe having two open ends, a pair of electrical terminals connected to a heat radiant body in the pipe, a region of electrically insulating powder having a high melting point and loaded inside the pipe to fix the heat radiant body, and a sealing member for the open end having a glass compound layer formed by a molten glass permeating into the insulating powder region at the open end.

Abstract: A composition resistor incorporates a thermal fuse inert preferably positioned at its center. The insert includes a fuse link which under normal conditions provides electrical continuity between lead wires extending from each end of the resistor. If a current overload occurs, the heat generated by the resistance material raises the temperature at the center of the resistor to the melting point of the fuse link and the fuse link opens circuit before the organic constituents of the resistor begin to decompose or ignite.

Abstract: A mounting system for an infrared tube or the like. The tube is supported by threaded bolts which axially extend from insulator plugs at each end of the tube. The tube is mounted by inserting one of the bolts into a bore in a mount until the insulator at the end of the tube contacts the inner surface of the mount. The bolt at the other end of the tube is then placed in axial alignment with a bore in another mount and inserted therethrough. The diameter of the bolts is substantially smaller than the diameter of the bores. A cylindrical sleeve having an internal diameter slightly larger than the diameter of the bolts and an external diameter slightly smaller than the diameter of the bores is inserted through each aperture to frictionally engage the bolts with their internal surfaces and the mounts with their outer surfaces. Electrical conductors are then secured to each bolt to supply electrical power to the tube.