950results about "Resistor terminals/electrodes" patented technology

To improve stability of gauge characteristics in a strain gauge having a resistor formed on a substrate having flexibility.SOLUTION: A strain gauge has: a resin-made substrate having flexibility; a functional layer formed of metal, an alloy, or a compound of metal directly on one face of the substrate; a resistor having α-Cr as a main component and formed of a film including Cr, CrN, and Cr2N directly on one face of the functional layer; and an insulating resin layer covering the resistor. The functional layer has a function to promote crystal growth of the α-Cr and deposit a film having the α-Cr as a main component. The thickness of the resistor is 0.05 μm or more and 2 μm or less. The thickness of the functional layer is 1 nm or more and 100 nm or less. The coefficient of expansion of the substrate is within a range of 7 ppm / K to 20 ppm / K.SELECTED DRAWING: Figure 2

The utility model relates to the technical field of lightning arresters, and discloses a lightning arrester with an on-off function, which comprises a lightning arrester shell and a bottom plate, the lightning arrester shell is fixedly mounted on the outer wall of the top of the bottom plate, a lightning arrester conductive core is mounted on the inner side of the lightning arrester shell, an on-off guide rod is arranged on the inner side of the lightning arrester shell, and the bottom plate is fixedly mounted on the bottom plate. The top end of the on-off guide rod is electrically connected with the bottom end of the lightning arrester conductive core, an insulating sealing plate is fixedly arranged at the bottom end of the on-off guide rod, a limiting groove is formed in the outer wall of the middle of the bottom of the bottom plate, and the insulating sealing plate is arranged on the inner wall of the limiting groove in a sliding mode. According to the utility model, the insulating sealing plate is pulled down to drive the on-off guide rod to move downwards, and the on-off guide rod continuously moves downwards in the movable hole until the on-off guide rod completely moves to the outer side of the lightning arrester shell, so that the disconnection work of the conductive core of the lightning arrester and the on-off guide rod can be realized, the operation is convenient, the lightning arrester can be prevented from bearing overvoltage, and the service life of the lightning arrester is prolonged. The device is practical and suitable for being widely popularized and used.

The invention relates to the technical field of electronic paste, in particular to copper electrode paste for an NTC thermistor and a preparation method and application of the copper electrode paste. A copper electrode slurry for an NTC thermistor comprises copper powder, an inorganic glass binder, an organic carrier and a dispersant, the inorganic glass binder comprises CuO and NiO, and the organic carrier comprises a polymer thickener. The copper electrode slurry can be coated on the surface of an NTC thermistor ceramic substrate through a silk-screen printing method, can be used as a metallized conductive layer after being sintered in nitrogen, is used for temperature measurement, temperature compensation, temperature control components and the like, and is wide in application. The copper electrode slurry for the NTC thermistor provided by the invention can be sintered in nitrogen at 550-650 DEG C, and has the advantages of wide sintering interval, good sintering appearance, excellent welding performance and strong adhesive force. After sintering, the ohmic contact is good, so that the prepared NTC thermistor can truly reflect the resistance value of a substrate, and the phenomenon of ion migration is avoided.

According to the chip resistor and the preparation method thereof, the laser wire cutting grooves adjacent to the left electrode and the right electrode are formed in the resistance layer through laser cutting, the resistance value of the resistor can be accurately adjusted and controlled, the manufacturing precision and consistency of the resistor are improved, the laser cutting mode is optimized through diagonal cutting, and the production efficiency is improved. The laser wire cutting groove is limited at the diagonal position and is adjacent to the front electrode, and the heat effect of the resistor is correspondingly controlled, so that the heat dissipation performance is improved; according to the chip resistor, through a multi-layer protection structure formed by the first protection layer made of the glass material and the second protection layer made of the epoxy resin material, the invasion of moisture, chemical corrosion and mechanical damage is effectively prevented, the service life of the resistor in a severe environment is remarkably prolonged, and particularly, through the third protection layer made of the resin silver material, the service life of the resistor is prolonged. The anti-corrosion performance of the electrode part is enhanced, so that the resistor can keep stable electrical performance during long-time work.

The utility model provides a high-safety resistor which comprises a shell (1), a resistor core (2) is arranged in the shell (1), a mica shell (3) is arranged outside the resistor core (2), quartz sand is filled in the mica shell (3), a leading-out sheet (4) is inserted on the mica shell (3), one end of the leading-out sheet (4) is connected and matched with the resistor core (2), and a group of limiting salient points (5) which are in limiting fit with the mica shell (3) are arranged in the shell (1). And a potting layer (6) covering one end of the mica shell (3) is arranged in the shell (1). The insulating resistor is simple in structure and convenient to produce, the insulating property of the resistor is improved, and the working stability and safety of the resistor are effectively improved in order to improve the structural stability and shock resistance.

To improve the solderability of an electrode, in a strain gauge using as a resistor a material containing Cr (chromium) or Ni (nickel).SOLUTION: A strain gauge includes: a flexible base material made of resin; a functional layer formed directly on one surface of the base material and made of a metal, an alloy, or a metal compound; a resistor containing α-Cr as a main component, formed directly on one surface of the functional layer and made of a film containing Cr, CrN, and Cr2 N; and an electrode electrically connected to the resistor. The functional layer has a function of promoting crystal growth of the α-Cr to form a film containing the α-Cr as a main component. The resistor has a thickness of 0.05 μm or more and 2 μm or less, and the functional layer has a thickness of 1 nm or more and 100 nm or less. The electrode includes: a terminal portion extending from an end part of the resistor; a first metal layer formed on the terminal portion and made of copper, a copper alloy, nickel, or a nickel alloy; and a second metal layer formed on the first metal layer and made of a material more excellent in solder wettability than the first metal layer.SELECTED DRAWING: Figure 2

The utility model provides a leveled resistor element, which comprises a substrate, a resistor layer and an electrode layer, solves the problems of impedance increase and abnormal product characteristics caused by improper joint of an interface between the electrode layer and the resistor layer, and comprises the following steps of: after the electrode layer process is finished, forming the resistor layer on the substrate; and laser or grinding is utilized to eliminate the height difference of the interface and process the discontinuous structure of the outline of the electrode layer.

The invention relates to the technical field of resistors, in particular to a high-performance heat dissipation load unit which comprises an air duct, a motor fixed to the air duct, a rotating shaft installed on an output shaft of the motor, a supporting disc fixed to the rotating shaft and a plurality of supporting fan blades fixed to the supporting disc in a spaced mode in the circumferential direction. The air duct is provided with an external liquid groove, and the outer end part of each supporting fan blade is provided with an external leading-out terminal inserted into the external liquid groove; the air duct is provided with an internal liquid receiving groove; an inner leading-out terminal inserted into the inner liquid receiving groove is arranged at the inner end part of each supporting fan blade; the supporting fan blades are insulators, and the two ends of the resistance wire of each supporting fan blade are connected with the outer leading-out terminal and the inner leading-out terminal of the corresponding supporting fan blade respectively, so that the resistance wires are electrically conducted through the conductive liquid. Compared with an existing load, the heat dissipation effect is good, the wind resistance is low, and the requirement for a draught fan is lowered. Whether the group of resistance wires are used or not can be adjusted by changing whether the external leading-out terminals are immersed into the conductive liquid in the external liquid tank or not, so that the power of the whole resistor unit can be adjusted.

A resistor includes a substrate, a pair of inner electrodes, a thin-film resistive layer, a pair of backside electrodes, and a thick-film resistive layer. The substrate includes a first surface and a second surface opposite to the first surface. The pair of inner electrodes is disposed on two opposite ends of the first surface, respectively. The thin-film resistive layer is disposed on the first surface and contacts the pair of inner electrodes, wherein the thin-film resistive layer has a first resistance value and includes a trimming groove. The pair of backside electrodes is disposed on two opposite ends of the second surface, respectively. The thick-film resistive layer is disposed on the second surface and contacts the pair of backside electrodes, wherein the thick-film resistive layer has a second resistance value, and the second resistance value is greater than 100 times of the first resistance value.

The present invention relates to a method for producing a multilayer varistor (1), having the steps of: preparing a metal paste (103) comprising silver and nickel, wherein the mass proportion of nickel in the metals of the metal paste (103) is at most 25%; applying the metal paste (103) to a ceramic green foil (102); applying a further ceramic green foil (102) to the metal paste (103) to produce a sandwich-like structure; and sintering the green foils (102) with the applied metal paste (103), wherein the green foils (102) are converted to ceramic layers (2) and the metal paste (103) is converted to an inner electrode (3).

The utility model discloses a mounting structure of a wire wound resistor, comprising two brackets for detachably connecting with the resistor, the two brackets are symmetrically distributed along the length direction of the resistor, the brackets comprise an elastic metal sheet and a conductive cap, the upper end of the elastic metal sheet is welded and fixed to the outer side of the conductive cap, the inner side of the conductive cap is provided with an assembly cavity adapted to the resistor end cap, and the spacing between the inner walls of the assembly cavities on the two conductive caps is less than the length of the resistor. The resistor of the utility model is more convenient to replace later, saving time and effort, and the replacement efficiency is improved.

The utility model discloses a dual-resistor integrated module, and relates to the technical field of electronic devices, the dual-resistor integrated module comprises a shell, a first resistor, a second resistor, a clamping structure and an encapsulation layer, and one end of the shell is provided with an opening; the first resistor and the second resistor are arranged in the shell side by side, a first metal contact pin and a second metal contact pin are arranged at the electrode positions, close to the first end of the opening, of the first resistor and the second resistor respectively, and the first metal contact pin and the second metal contact pin extend out of the opening. The electrodes of the second ends, far away from the opening, of the first resistor and the second resistor are connected through a conductive assembly, and the first ends of the first resistor and the second resistor are provided with a first clamping groove and a second clamping groove respectively; two ends of the clamping structure are respectively clamped in the first clamping groove and the second clamping groove; and the encapsulation layer is formed in the shell and is used for fixing and protecting the first resistor and the second resistor in the shell. According to the invention, the resistor can be accurately positioned and stably fixed, and the overall reliability is improved.

The resistor body of the chip resistor is provided with a resistance value adjusting part. A meandering forming portion is formed in the resistance value adjusting portion. In the meandering forming portion, the first trimming groove and the second trimming groove are arranged along a first direction (longitudinal direction). The first trimming groove has a first linear portion extending from a second edge of the resistance value adjusting portion along a second direction (short side direction). The second trimming groove has a second linear portion extending from the second edge of the resistance value adjusting portion in the second direction, and a bent portion extending from the tip of the second linear portion toward the first trimming groove.

To prevent solder wetting on a resistor formed of a high specific resistance material, that can be used in the applications for large current detection.SOLUTION: A multilayer resistor includes a resistor having a plate shape and including a first flat surface and a second flat surface in a thickness direction, and a first electrode formed on the first flat surface and a second electrode formed on the second flat surface. The resistor includes a metal body formed of an electroconductive metal material, and an insulating particle formed of an insulating material. The insulating particle includes a first insulating particle with a particle diameter of 5 μm or more. At the implementation on a printed board, an end surface of the resistor is exposed and the second electrode is connected through the solder.SELECTED DRAWING: Figure 1

An over-current protection device comprises first and second electrode layers and a PTC material layer laminated therebetween. The PTC material layer includes a polymer matrix, a conductive filler and a titanium-containing inner filler. The polymer matrix has a fluorine-free polyolefin-based polymer. The titanium-containing inner filler has a compound represented by a general formula of MTiO3, wherein the M represents transition metal or alkaline earth metal. The total volume of the PTC material layer is calculated as 100%, and the titanium-containing inner filler accounts for 1-9% by volume of the PTC material layer.

The invention provides a lightning arrester for a 10KV distribution network, and relates to the technical field of lightning arresters, the lightning arrester comprises a shell part and a core body, the shell part is provided with a cylindrical inner cavity, and the core body is arranged in the inner cavity of the shell part; the core body comprises at least one zinc oxide resistor disc and one or two discharge cavity assemblies, and by designing the structure of the core body and the design of the discharge cavity assemblies, the two ends of a cylinder structure formed by the zinc oxide resistor disc and the discharge cavity assemblies form an open-circuit state, and compared with a traditional low-energy-consumption state, the energy consumption is reduced; the lightning arrester can solve the problem that the lightning arrester is in a low-energy-consumption state for a long time, so that energy conservation is realized, and when a line bears a high-voltage state, a pole piece in the discharge cavity assembly generates a discharge effect, and the discharge cavity assembly is in a conducting state; the zinc oxide resistor disc is also in a conducting state when the circuit bears high voltage due to the characteristic that the zinc oxide resistor disc belongs to a non-linear resistor piece, so that the core body is in a conducting state, the circuit is conducted with the ground in a short time, and the purpose of protecting the power distribution element is achieved.

The thermistor is provided with: a holding member that is attached to a wall section that partitions the inside and the outside of a case member; and a thermistor body that is held by the holding member and detects the temperature inside the housing member. The thermistor body is provided with: a thermistor element for detecting temperature; a lead electrically connected to the thermistor element; and a resin part which covers the thermistor element and from which the lead wire is led out to the outside. The holding member includes: a holding portion that holds the resin portion and arranges the thermistor element inside the frame member; and a lead-out part for leading out the lead wire to the outside of the frame member.

To improve the solderability of an electrode, in a strain gauge using as a resistor a material containing Cr (chromium) or Ni (nickel).SOLUTION: A strain gauge includes: a flexible base material made of resin; a functional layer formed directly on one surface of the base material and made of a metal, an alloy, or a metal compound; a resistor containing α-Cr as a main component, formed directly on one surface of the functional layer and made of a film containing Cr, CrN, and Cr2 N; and an electrode electrically connected to the resistor. The functional layer has a function of promoting crystal growth of the α-Cr to form a film containing the α-Cr as a main component. The resistor has a thickness of 0.05 μm or more and 2 μm or less, and the functional layer has a thickness of 1 nm or more and 100 nm or less. The electrode includes: a terminal portion extending from an end part of the resistor; a first metal layer formed on the terminal portion and made of copper, a copper alloy, nickel, or a nickel alloy; and a second metal layer formed on the first metal layer and made of a material more excellent in solder wettability than the first metal layer.SELECTED DRAWING: Figure 2

The utility model is applicable to the technical field of resistor production, and provides a precision sampling alloy resistor, which comprises a carrier and four pins, two pins are respectively arranged on two sides of the carrier, a gap is formed between the two pins on the same side, and the four-pin structure enables the alloy resistor to have more stable support, can better bear the load of current, and is more stable in performance. The stability and the reliability of the system are improved; one of the two pins on the same side is used for connecting a current lead, the other pin is used for connecting a voltage sampling lead, meanwhile, a four-wire detection circuit is adopted, two current leads are used for transmitting current, and the other two voltage sampling leads are used for measuring voltage, so that the influence of lead resistance on current measurement can be eliminated, and the sampling precision is improved.

The utility model relates to the technical field of circuit elements, and specifically to a high-power plug-in alloy resistor, comprising a resistor housing, a sealing shell component, a connecting component and a heat dissipation component, wherein the heat dissipation component comprises a heat sink, a resistor core, an insulating sheet and quartz sand, wherein the heat sink is fixedly mounted in the resistor housing, the resistor core is fixedly mounted on the heat sink, the insulating sheet is fixedly mounted on the resistor core, and the quartz sand is fixedly mounted in the resistor housing, the resistor housing is welded and fixed on a circuit board through pins, and is electrically conductive through a conductive block, the resistor core emits heat during the flow of current, the emitted heat is dissipated through the heat sink, the high temperature generated by the resistor core is effectively taken away, and the performance is improved, while under the action of the insulating sheet and the quartz sand, the resistor core is protected, and the heat generated by the resistor core can be quickly conducted to the heat sink for heat dissipation, thereby effectively dissipating the generated heat and improving the service life of the resistor.

The invention provides a shunt resistor with a temperature detection function, which comprises a first electrode, a second electrode, an intermediate resistor body and a circuit board acquisition device, and the intermediate resistor body is positioned between the first electrode and the second electrode. The circuit board acquisition device comprises a substrate, a sampling output connector, a temperature acquisition module and a voltage acquisition module. The substrate is provided with a contact surface and an observation surface, the contact surface faces the middle resistor body, a spacing gap exists between the contact surface and the middle resistor body, and the sampling output connector is arranged on the observation surface. And two bonding pads are arranged on the contact surface and correspond to the first electrode and the second electrode respectively. Two ends of the middle resistor body are respectively provided with a thermal insulation wall, and ventilation gaps are formed between the thermal insulation walls and the contact surfaces. According to the shunt resistor, the temperature of the shunt resistor can be acquired in real time, and the resistance values of a product at different temperatures are compensated, so that the measurement precision is improved; and meanwhile, the flowing range of molten welding fluid can be controlled during welding, and stable and firm welding is achieved.

A quantifiable electromagnetic relay includes a housing, a PCB board, and two leading-out pieces extending from an inside to a first side of the housing and connected to a contact assembly inside the housing; one leading-out piece includes a plate-like sampling resistor piece made of high resistivity materials and conductive pieces connected at two ends of the sampling resistor piece, two sampling pins extending in the same direction are arranged at the two ends of the sampling resistor piece; the PCB board is connected to two sampling pins; a through-hole is provided in the sampling resistor piece. An induced current generated by a first closed loop formed by the through-hole offsets an induced current generated by a second closed loop formed by the sampling resistor piece, the sampling pins, and the PCB board in the external alternating magnetic field, thereby enhancing the relay's ability to resist interference.

A system includes an inverter configured to convert DC power from a battery to AC power to drive a motor, wherein the inverter includes: a power module, the power module including a thermistor assembly, the thermistor assembly including: a conductive layer including a trench; a thermistor connected to the conductive layer and disposed across the trench; and a first height control feature between the conductive layer and the thermistor.

An electrical device is described. According to one embodiment, the electrical device comprises an electrical element comprising two electrodes and two wires connected to the electrodes, each wire comprising a flat area forming one end of the wire, and the flat areas being configured to touch the electrodes. Furthermore, a method for manufacturing an electrical device is described.

To provide a resistor which can ensure insulation quality of a resistor element while reducing the number of components.SOLUTION: A resistor 100 comprises: a case 1; and a resistor element 2 having a resistor body 21 which is housed in the case 1, a pair of terminal parts 22 which are provided on the resistor body in such a manner that part of them protrudes from the case 1, and a resistor wire 23 which is wound around the resistor body 21. The resistor body 21 has: a winding core 211 around which the resistor wire 23 is wound; and a pair of terminal installation parts 212 each of which is provided on each of both ends of the winding core 211 so that each of the pair of terminal parts 22 may be installed. Each of the terminal installation parts 212 has a pair of first facing parts 212a each of which faces each of a pair of first peripheral walls 121 of the case 1. The winding core 211 has a pair of lateral flat surfaces 211a each of which faces each of the pair of first peripheral walls 121 and is recessed from each of the pair of first facing parts 212a.SELECTED DRAWING: Figure 7

The utility model relates to the technical field of power equipment, and in particular to a lightning arrester. It includes a support sleeve, at least one resistor is arranged in the support sleeve, and an end cap inserted into the end of the support sleeve and connected to the resistor, multiple plug holes are arranged at both ends of the support sleeve, and multiple slots corresponding to the plug holes are arranged on the outer circumference of the end cap, and the plug plate is inserted into the plug hole and the slot at the same time, and the ring is sleeved on the outside of the part of the support sleeve where the plug hole is arranged, and also includes an insulating shell injection molded outside the outer circumference of the support sleeve, the ring and the end cap, and the end cap is provided with a threaded hole on the side away from the resistor. The support sleeve and the end cap of the utility model have a high bonding force.

The invention discloses a resistor carrier, a resistor pin bending system and a resistor pin bending method. The resistor carrier comprises a support body which is strip-shaped and has two opposite sides in the width direction of the support body; and the retaining structure is positioned on the top surface of the support body and is used for retaining the resistor body of the resistor. When the resistor body of the resistor is held in the holding structure, a pair of pins of the resistor are suspended above the top surface of the supporting body and extend out of the two sides of the supporting body respectively, so that the pins of the resistor are allowed to be bent relative to the resistor body. According to the resistor pin bending system, automatic bending of the resistor pin can be achieved, the resistor pin bending efficiency is improved, automatic flow line production of electronic products can be achieved, and the production efficiency of the electronic products is greatly improved.

The invention relates to the field of resistor materials, and particularly discloses a piezoresistor and a preparation process thereof.The piezoresistor comprises a ceramic substrate and copper-based electrodes formed on the two sides of the ceramic substrate, and each copper-based electrode comprises a nickel bottom layer sputtered on the ceramic substrate through a magnetron sputtering vacuum plating process and a copper surface layer sputtered on the nickel bottom layer; the preparation process comprises the following steps: S1, placing a to-be-treated zinc oxide-based ceramic substrate in a vacuum coating chamber, vacuumizing, and carrying out magnetron sputtering by using a nickel target until the thickness of a nickel bottom layer is 100-200nm; and S2, after the air pressure is adjusted, copper and palladium are replaced for copper plating till the thickness of a copper surface layer is 3-5 microns. According to the invention, the production cost of the piezoresistor is reduced, and the obtained piezoresistor has good stability and electrical properties.

A resistor assembly, in particular a resistor assembly for a power combiner, includes a resistor chip and a clamping element for fixing the resistor chip to a cooling element, the clamping element having a clamping arm that applies pressure to the resistor chip.

This invention discloses a high-vibration-resistant high-voltage surge arrester, specifically relating to the field of surge arrester technology. It includes a surge arrester body, a buffer assembly, and an adjustment assembly. Through the buffer assembly, this invention can release the blockage of the vent hole when the surge arrester body experiences severe, large-amplitude vibrations. It can adjust the buffer rigidity, allowing the first piston to continue moving downwards for buffering, thus improving the buffering effect. Furthermore, as the first piston moves to the bottom of the first chamber, it gradually blocks the connecting hole, acting as a throttling device, gradually reducing the oil output within the connecting hole. This further slows the descent speed of the first piston, thus providing multi-stage buffering. This prevents buffer failure and impacts under large-amplitude vibrations, further improving the buffering effect and extending the service life of the surge arrester.