57results about "Fixed resistors with intervening connectors" patented technology

An improved IDC trim resistor connector assembly made up of a generally open top cup shape connector with side wall slots and an interior first array of terminal posts arranged for passage therethrough of a first lead wire of sensor circuitry. A first stamped metal IDC terminal is push-on mounted on the terminal posts for IDC cradling and electrically and mechanically receiving and connecting to the first lead wire. A conventional trim resistor substrate is loose mounted but accurately positioned on the connector bottom wall and has an "E" pattern of resistive material adapted for center leg laser trimming to calibrate the associated sensor circuitry. A first IDC terminal spring leg overlap contacts one side leg of the trim resistor E-pattern and thereby spring clamps the resistor substrate. A cover is snap-latch mounted on the connector and has an access opening to enable laser trimming of the trim resistor after cover installation. One end of a second lead wire is received in a second IDC metal terminal in turn mounted on a second array of connector-interior terminal posts and also having a spring leg overlap electrically contacting and clamping the other E-pattern side leg. Spring barbs on the terminals anchor the same once fully inserted downwardly onto the terminal posts. Connector locking tangs and cover locking ears provide snap-on retention of the cover on the connector, and press-in / keeper internal cover projections cause push-down assembly of the lead wires as the cover is latched onto the connector. Cover locking tangs and cap latching ears provide snap-together locking of a cap on the cover when the cap is pushed down on the cover to seal the access opening after completion of laser trimming and in-filling of the covered container with sealant. In a second embodiment a crimp-type terminal, also provided with a spring clamping leg, is fastened to the second lead wire and has a barbed mounting strap clasping a modified second terminal post array when fully installed thereon.

An electronic component substrate 1-1 includes an insulating base 10 and a flexible circuit board 20 mounted on the insulating base 10. The flexible circuit board 20 is a synthetic resin film provided thereon with terminal patterns 29 and a conductor pattern 25 whose surface is slidingly contacted with a slider. The insulating base 10 is a synthetic resin molded piece. The flexible circuit board 20 is insert-molded to the insulating base 10. The electronic component substrate 1-1 is produced by preparing the flexible circuit board 20 and first and second mold members 41 and 45 having a cavity C1 with a shape that corresponds to the external shape of the electronic component substrate 1-1. Then, the flexible circuit board 20 is accommodated in the cavity C1 between the first and second mold members 41 and 45, and a molten molding resin is filled into the cavity C1. After the filled molding resin has been solidified, the first and second mold members 41 and 45 are removed.

A resistor card for a fuel level sensor has improved resistance to corrosion and wear. The resistor card has a substrate with a resistive layer and a conductive layer. A nickel layer covers the conductive layer. A nickel-gold alloy layer covers the nickel layer. The nickel-gold alloy layer protects the conductive layer from sulfur corrosion and improves wear resistance.

An electrical resistor having a resistance value and capable of withstanding high power surges, utilizing a thick film deposited on a substrate and trimmed with one or more cuts configured to maintain a level of current crowding while increasing the resistance value of the resistor. A surge resistor can be modified in a similar fashion.

A resistor card for a fuel level sensor has improved resistance to corrosion and wear. The resistor card has a substrate with a resistive layer and a conductive layer. A nickel layer covers the conductive layer. A nickel-gold alloy layer covers the nickel layer. The nickel-gold alloy layer protects the conductive layer from sulfur corrosion and improves wear resistance.

An electronic component substrate (1-1) includes an insulating base (10) and a flexible circuit board (20) mounted on the insulating base (10). The flexible circuit board (20) is a synthetic resin film provided thereon with terminal patterns (29) and a conductor pattern (25) whose surface is slidingly contacted with a slider. The insulating base (10) is a synthetic resin molded piece. The flexible circuit board (20) is insert-molded to the insulating base (10). The electronic component substrate (1-1) is produced by preparing the flexible circuit board (20) and first and second mold members (41, 45) having a cavity (C1) with a shape that corresponds to the external shape of the electronic component substrate (1-1). Then, the flexible circuit board (20) is accommodated in the cavity (C1) between the first and second mold members (41,45), and the cavity (C1) is filled with a molten molding resin. After the molding resin has solidified, the first and second mold members (41, 45) are removed.

A resistor card for a fuel level sensor has improved resistance to corrosion and wear. The resistor card has a substrate with a resistive layer and a conductive layer. A nickel layer covers the conductive layer. A nickel-gold alloy layer covers the nickel layer. The nickel-gold alloy layer protects the conductive layer from sulfur corrosion and improves wear resistance.

In a lever transmitter for a fuel tank, two spring tongues, each with a sliding contact, are arranged on a contact plate of a potentiometer. The contact plate is prestressed against sliding tracks of the potentiometer by a spring element fastened to the carrier and having the sliding contacts due to vibrations are thereby reliably avoided.

According to the invention, the coil of a magnet coil arrangement has a coil body which comprises a winding (14) and is extruded with plastic (17). A plug-in base with contact connectors is formed on the coil, wherein one of the connectors is used for connection of the grounding conductor (18). A metallic housing is placed over the coil. Connection of said metallic housing to the contact connector associated to the grounding conductor is achieved by means of a connection element which is guided through a recess of the plug-in base. A sealing element (42) disposed between the connection element and the recess prevents penetration of a fluid from a region between the metallic housing and the coil, into the region where a connector is connected to the contact connectors. In order to improve the electrical connection between the contact connector associated to the grounding conductor and the metallic housing, for a connection element (31) which is threaded in the metallic housing, a cylindrical metallic part is placed between the contact connector and the metallic housing. A respective sealing element (41, 42) is placed between the connection element and the metallic cylindrical part as well as between said part and the recess of the plug-in base. Such magnet coil arrangements are used in electromechanically-controlled hydraulic valves in which metallic parts accessible from outside must be connected to a grounding conductor.

Digital potentiometer architecture is disclosed, composing of an integrated circuit containing multiple string arrays, each having a plurality of switching devices and an array of resistors. The insertion of an additional string array between the input terminals and the wiper, allows for the disconnection of a common string array and for the independent calibration of the resistance between each input terminal and the wiper.

Electric potentiometer (1) is provided with carrier plate (6) with resistance circuit (3) wherein the free ends (9,12) of the resistance circuit (3) are connected with joint (15,18) of a first and a second electric potentiometer, and a tapping end (27) with a gliding contact (24), wherein the tapping end is connected with the joint (21) of a third electric potentiometer. The resistance circuit (3) is composed of discrete array (4) of resistance part (30) with preset resistance value by electrical connection. In addition, using an existence device (36), the gliding contact (24) is electrically connected with a preset area of the resistance array (4) along its moving track (B) in the adjusting area of the tapping end.

The invention includes an integrated adjustable resistor. The integrated adjustable resistor includes a first electrode, a second electrode, and a phase change medium electrically connected to the first electrode and the second electrode. The integrated adjustable resistor further includes an adjustable pulse generator for applying a variable amount of energy to the phase change medium. A resistance of the phase change medium is continuously dependent upon the amount of energy applied to the phase change medium. A resistance dependent circuit is electrically connected to the first electrode and the second electrode. Operation of the resistance dependent circuit is continuously dependent upon the resistance of the phase change medium.

The present invention relates to an adjustable resistor embedded in a circuit board and a method of fabricating the same. The adjustable resistor comprises a resistor with a number of connection terminals, and a number of via holes extending to contact with the resistor. The resistive value of the resistor is variable depending on the size of the via holes, the number of the via holes, or the distance between the via holes.

The invention discloses a sleeve rod potentiometer. The sleeve rod potentiometer comprises a protective shell, a potential adjusting ring, an insulating base, an adjusting rod and an electric brush, wherein the potential adjusting ring is arranged on the insulating base through a rotary shaft arranged at the center of the insulating base; the potential adjusting ring comprises a resistor body and an adjusting ring; one end of the electric brush is pressed on the resistor body and the other end of the electric brush is fixedly arranged on the insulating base; the adjusting rod penetrates into the protective shell from the side face of the protective shell; the adjusting rod is composed of a sleeve rod and an inner rod; the sleeve rod is sleeved with the outer side of the inner rod and the outer side of the sleeve rod is fixedly connected with the side wall of the protective shell; an adjusting screw cap is arranged at the top of one end of the inner rod outside the protective shell; an adjusting wheel is arranged at the top of one end inside the protective shell and is pressed on the adjusting ring. According to the sleeve rod potentiometer, ash is prevented from entering a leaking gap of the protective shell effectively and the adjustment is stable.

A process tunable resistor is fabricated by adjusting elements of the resistor during a fabrication process. The elements include legs, turns, and elements such as a parallel sub-legs, that are adjusted in the fabrication process to provide a specific user defined resistance value. The process tunable resistor provides for fixed contact points in order to support pre-existing or define circuit designs.

A resistor card for a fuel level sensor has improved resistance to corrosion and wear. The resistor card has a substrate with a resistive layer and a conductive layer. A nickel layer covers the conductive layer. A nickel-gold alloy layer covers the nickel layer. The nickel-gold alloy layer protects the conductive layer from sulfur corrosion and improves wear resistance.

The invention discloses a slide rheostat. The slide rheostat comprises a base and a turntable, wherein an annular conductor is fixedly arranged on the base, a plurality of sub conductors are distributed on the periphery of the annular conductor at intervals, the turntable is rotatably connected with the base, two metal slide sheets are arranged on the turntable, one ends of the two metal slide sheets are electrically connected with the annular conductor, the distance between the other ends of the two metal slide sheets is greater than the interval between two adjacent sub conductors, when the turntable rotates, the other ends of the two metal slide sheets are simultaneously electrically connected with the same sub conductor, the annular conductor is connected with a current input end through a common resistor, and each sub conductor is connected with a current output end through a resistor. The two metal slide sheets of the slide rheostat can rotate clockwise, and also can rotate anticlockwise, the rotation angles are not limited within 360 degrees, and the use is relatively convenient and flexible; after the slide rheostat is applied to an electronic product, the electronic product is relatively convenient to use, so that the user experience on the electronic product is improved.

By using a two-part assembly of a rotary member (10) bearing one or more wipers (14) clipped on to a substrate member (1) bearing one or more tracks (3), subassemblies may be supplied which can be used by manufacturers of articles (20,21,22) in which it is desired to sense the angular position of one member (20) relative to another (22), but which are easy to install and reliable in use. The assembly provides substantial savings in terms of the number of individual components used, thus reducing manufacturing and assembly costs. Manufacturing costs may also be reduced by using track material as a bearing material, as both track and bearing may be applied simultaneously, e.g. by screen printing.

A variable resistor has a substrate, an insulating film, a resistance element, a rotary assembly and a wiper. The substrate has a first terminal having an annular segment, a second terminal and a third terminal having a semi-circular segment disposed adjacent to the annular segment of the first terminal. The insulating film has a central hole corresponding to the annular segment and covers the second terminal and the semi-circular segment. The resistance element is mounted on the insulating film and contacts the second terminal and the distal end of the semi-circular segment through two gaps of the insulating film. The rotary assembly is mounted on the substrate. The wiper is rotated by the rotary assembly and has multiple contacts respectively contacting the resistance element and the annular segment. Therefore, The rotary assembly can be continuously rotated to prevent accidental breakage without short-circuiting.

Provided is a rotary-operation-type electronic component having a simple design. The present invention includes: a column-shaped operation shaft; a bearing having a pass-through shaft hole; an electrical signal control unit attached to one end of the bearing, for controlling an electrical signal by rotary operation of the operation shaft; and a cylindrical spring, in which the barrel is cut in the center axial direction, accommodated inside a spring accommodation gap formed between the outer peripheral surface of the operation shaft and the inner peripheral surface of the pass-through shaft hole; the cylindrical spring having a plurality of spring plate parts extending in the center axial direction of the operation shaft, arranged mutually connected in the circumferential direction on the outer peripheral surface of the operation shaft; and the number of spring plate parts and the maximum distortion of the spring plate parts being independently adjustable using a structure in which the plurality of spring plate parts have a central region part in the length direction that projects in a curve toward the outer side in the radial direction of the cylindrical spring, the spring plate parts being elastically sandwiched between the outer peripheral surface of the operation shaft and the inner peripheral surface of the pass-through shaft hole, and the length in the center axial direction of the spring plate parts being extendably maintained by the pressing force of the outer peripheral surface and the inner peripheral surface.

Conductive plastic resistance element having particles of conductive material embedded therein and projecting therefrom for reducing variations in contact resistance in a potentiometric device in which the element is employed. The element is made by processing carbon powder, resin, solvent and conductive phases to form a paste, applying the paste to a substrate, and curing the paste to drive off the solvent and form a film, with the conductive phases rising to the surface of the film and becoming embedded therein.

A multi-point switching apparatus includes a continuous common pattern formed on a contact circuit board, equally spaced to-be-switched patterns, and a slider that is brought into sliding contact with both the common pattern and one to-be-switched pattern. The slider is moved to make a switchover in succession. The slider includes a first sliding part and second sliding part that are elastically deformable individually. Each to-be-switched pattern includes a first pattern part placed so as to be brought into sliding contact with the first sliding part and a second pattern part placed so as to be brought into sliding contact with the second sliding part. The first pattern part and second pattern part are electrically connected to each other for each of the to-be-switched patterns. While any of the first sliding part and second sliding part is in a space, the other is in sliding contact with the to-be-switched pattern.

A digital potentiometer includes a circuit containing multiple string arrays, each having a plurality of switching devices connected to an array of resistors. Each input terminal receives a separate digital input code enabling the resistance of one of the arms to be varied without changing the other.

Method and apparatus for attaching an electrical component to a printed circuit board. The apparatus includes a circuit board, an elastomeric connector, a rotary electrical component having a connector housing for holding the elastomeric connector, and one or more fasteners for securing the electrical component to the circuit board with sufficient force to compress the elastomeric connector and thereby ensure electrical contact between the electrical component and the printed circuit board.

The invention relates to a potentiometer, a calibration method and a calibration system of the potentiometer as well as a volume control device and electronic equipment. The potentiometer comprises a resistor body, a first pin, a second pin, a third pin, a fourth pin, a switch, a protective resistor and a movable electric brush, wherein the first pin is connected to the electric brush; the second pin is connected to one end of the resistor body; the third pin is connected to the other end of the resistor body; one end of the protective resistor is connected to the second pin; the other end of the protective resistor is respectively connected to one end of the switch and the fourth pin; the other end of the switch is connected to the third pin. Through the potentiometer, the influence of the residue resistance can be eliminated; when the potentiometer is applied to the volume control of the electronic equipment, the output volume is relatively more accurate.

A multi-point switching apparatus includes a continuous common pattern formed on a contact circuit board, equally spaced to-be-switched patterns, and a slider that is brought into sliding contact with both the common pattern and one to-be-switched pattern. The slider is moved to make a switchover in succession. The slider includes a first sliding part and second sliding part that are elastically deformable individually. Each to-be-switched pattern includes a first pattern part placed so as to be brought into sliding contact with the first sliding part and a second pattern part placed so as to be brought into sliding contact with the second sliding part. The first pattern part and second pattern part are electrically connected to each other for each of the to-be-switched patterns. While any of the first sliding part and second sliding part is in a space, the other is in sliding contact with the to-be-switched pattern.

The present invention relates to an adjustable resistor embedded in a circuit board and a method of fabricating the same. The adjustable resistor comprises a resistor with a number of connection terminals, and a number of via holes extending to contact with the resistor. The resistive value of the resistor is variable depending on the size of the via holes, the number of the via holes, or the distance between the via holes.

The potentiometer (1) has a carrier plate (6) e.g. printed circuit board, carrying a resistance strip (3). The strip is formed from a resistor arrangement (4) of electrically interconnected discrete resistor units (30) e.g. surface mount device (SMD) components, with preset resistance values. A measuring tap (27) carries a sliding contact that is electrically connected with an electrical connection point (42) of the resistor arrangement along movement track of the strip by an electric connection device in an adjusting position of the tap. The sliding contact is formed as a ridge or brush.