Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
44results about How to "No change in resistance" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Collector used for negative pole of lithium ion battery
InactiveCN102034981ANo change in resistanceImprove cycle lifeElectrode carriers/collectorsAluminium-ion batteryInternal resistance
The invention relates to the technical field of lithium ion batteries, in particular to a collector used for the negative pole of a lithium ion battery. The collector comprises a collector body, wherein the surface of the collector body is covered with a processing layer. The processing layer comprises 5-20 wt% of conductive carbon, 79-94 wt% of polyvinylidene fluoride and 0.5-1.5 wt% of oxalic acid. The processing layer is adopted to deal with a negative pole collector body, and the conductivity between the collector body and negative active material can be enhanced by the conductive carbon, thereby reducing the internal resistance of the battery and increasing power performance. In processing, oxalic acid corrodes the collector body to increase the roughness of the surface of the collector body, thereby increasing the contact area, reducing contact resistance, also reducing the internal resistance of the battery, and increasing the power of the battery. The processed collector makes the adhesion between the negative active material and the collector body get better in the cycle process, makes resistance of the battery basically remain in the cycle process, and improves the cycle life of the battery.
Owner:DONGGUAN AMPEREX TECH
2/1 voltage ratio self-calibration method of voltage divider
ActiveCN105137378AReduce the absolute valueNo change in resistanceElectrical measurementsEngineeringVoltage ratio
The invention provides a 2 / 1 voltage ratio self-calibration method of a voltage divider. The 2 / 1 voltage ratio self-calibration method comprises the steps of a step 1, applying a DC voltage U1 on a tested voltage divider and a reference voltage divider, measuring a voltage difference deltau1 between a resistor RY in the tested voltage divider and a resistor R2 in the reference voltage divider; a second step, interchanging the positions of a resistor RX and the resistor RY in the tested voltage divider; a third step, applying a DC voltage U2 on the tested voltage divider and the reference voltage divider, measuring a voltage difference deltau2 between the voltage of the resistor RX in the tested voltage divider and the voltage of the resistor R2 in the reference voltage divider; and a fourth step, according to the U1, U2, deltau1 and deltau2, calculating the actual voltage ratio K and a measuring uncertainty d of the tested voltage divider. Compared with the prior art, the 2 / 1 voltage ratio self-calibration method of the voltage divider is advantageous in that the 2 / 1 voltage ratio of the voltage divider can be accurately acquired without direct measurement for a resistance or use of a standard voltage divider with a higher accuracy grade.
Owner:CHINA ELECTRIC POWER RES INST +3
Filter-screen wet-type electric dust removing device and method
The invention discloses a filter-screen wet-type electric dust removing device. The electric dust removing device comprises a flue gas inlet device, a flue gas processing device and a flue gas discharging device, wherein the flue gas inlet device, the flue gas processing device and the flue gas discharging device are sequentially and closely connected with one another to form an integrated semi-enclosed device which is provided with openings in the two ends; a plurality of parallel anode plates and cathode wires arranged among the anode plates are arranged inside the flue gas processing device; dust collecting devices are arranged at the tail ends of the anode plates, and are used for capturing dust escaping from the tail ends of the anode plates. The electric dust removing device is efficiently intelligentized, and can effectively capture dust escaping along the surfaces of the dust collecting anode plates, increase the dust collecting areas of electric fields of dust removers, improve the dust collecting efficiency and avoid reentrainment pollution; in the wet-type soot cleaning process, the dust temperature can be further reduced, the dust moisture is increased, the dust specific resistance is reduced, and the dust removing efficiency is improved; meanwhile, when atmosphere hazardous materials are removed, effective ingredients in pollutants are extracted and converted into useful chemical fertilizers, low carbon and environment protection are realized, and the sustainable development of enterprises is facilitated.
Owner:YIXING IDEAL TECH CO LTD
Al-Ge-Te phase-change material for phase change memory
InactiveCN102832339AImprove cycle lifeSmall currentElectrical apparatusPhase-change memoryPhase-change material
The invention relates to an Al-Ge-Te phase-change material for a phase change memory, which has a chemical formula of Al(100-x-y)GexTey, wherein x plus y is less than 100 but is more than 50, and x divided by y is less than 4 but is more than 0.25. The Al-Ge-Te phase-change material is used as a storage medium in the phase change memory, and the conversion of high and low resistances can be realized under the action of electric signals. Electric signals act on the phase change memory based on the Al-Ge-Te phase-change material, so the low resistance value is larger than the low resistance value of a device based on the conventional Ge-Te phase-change material, so the low power consumption requirement is satisfied. Moreover, the Al-Ge-Te phase-change memory maintains the normal high and low resistance difference after being circularly erased for 103 times, so the circulation service life of the device is long.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
Exposure sensor based on memristors connected in reverse series
The invention discloses an exposure sensor based on memristors connected in reverse series. The exposure sensor comprises a first power supply V1, a second power supply V2, a switch K, a photoelectric module, a current-limiting module, an memristor module, a difference-acquiring module, an amplifying module, and an increasing module. The first power supply V1 or the second power supply V2 forms a circuit successively with the switch K, the photoelectric module, the current-limiting module and the memristor module. The memristor module includes memristors Mz1, Mz2, Mj1 and Mj2. The Mj1 and the Mj2 are completely the same. The Mz1 and the Mj1 are connected in series. The Mz2 and the Mj2 are connected in series. A series branch formed by the Mz1 and the Mj1 is connected in parallel with a series branch formed by the Mz2 and the Mj2. The difference-acquiring module is connected with the memristor module. The amplifying module is connected to the difference-acquiring module. The increasing module is connected with the amplifying module. The exposure sensor is large in exposure measurement range, high in sensitivity, suitable for the measurement of large exposure and long exposure, and is simple in circuit, avoids an influence of a memristor resistance value change on the loop current and the exposure measurement of the sensor, and is low in measurement error and easy to use.
Owner:天津尼库尔新能源科技有限责任公司
Flexible graphene heating fabric with real-time temperature monitoring function
InactiveCN109435394AWashableMonitoring the heating functionLamination ancillary operationsSynthetic resin layered productsInsulation layerCopper foil
The invention discloses a flexible graphene heating fabric with a real-time temperature monitoring function. The flexible graphene heating fabric comprises a heating temperature measuring layer and heat insulation layers on two sides, the heat insulation layers are provided with traditional fabrics, the heating temperature measuring layer can be provided with a plurality of heating temperature measuring units, so that different portions are heated by different temperatures, and the temperatures are monitored in real time. The heating temperature measuring layer takes a flexible macromolecule film as a substrate, graphene-based conductive ink serves as a raw material, low-resistance graphene conducting layer is printed by a silk-screen printing mode, a conductive silver paste film and a copper foil serve as electrodes, printable flexible temperature sensors are printed on the low-resistance graphene conducting layer, and the heating temperature measuring layer are prepared by modes suchas hot pressing and bonding. Local portions of the flexible graphene heating fabric can be heated in a distinguished manner, and the flexible graphene heating fabric has the advantages that the heating fabric is uniformly heated, and the temperature can be accurately controlled.
Owner:宝泰隆新材料股份有限公司北京分公司
Lithium-ion adsorption column and preparing method thereof
InactiveCN104928471ACorrosion resistanceWith high pressureSolid sorbent liquid separationProcess efficiency improvementFiberLithium
The invention discloses a lithium-ion adsorption column. The lithium-ion adsorption column comprises a hollow column body formed by entanglement of thermoplastic polymer fibers, wherein a lithium-ion adsorbent is bonded to the column body, and the lithium-ion adsorbent is obtained after lithium-ions are eluted from a lithium-ion adsorption precursor. The invention further discloses a method for preparing the lithium-ion adsorption column. The method comprises the steps of A, heating and melting a thermoplastic polymer, and conducting spinning to form the thermoplastic polymer fibers; B, drawing the thermoplastic polymer fibers, spraying the lithium-ion adsorption precursor on the surfaces of the thermoplastic polymer fibers, and entangling the thermoplastic polymer fibers to form a lithium-ion adsorption precursor column which is of a hollow columnar structure; C, conducting cooling, lithium-ion elution, washing and drying on the lithium-ion adsorption precursor column to obtain the lithium-ion adsorption column. The method is simple, and the lithium-ion adsorption column has the advantages of being high in adsorbing capacity, high in adsorbing rate and the like in use.
Owner:QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI +1
Telescopic flexible conductive film and preparation method thereof
PendingCN110379544ANo change in resistanceSmall resistance change rateMaterial nanotechnologyConductive layers on insulating-supportsEffective surfaceElastic substrate
The invention relates to a telescopic flexible conductive film. The telescopic flexible conductive film includes a first elastic substrate layer, a conductive line layer and a second elastic substratelayer, wherein the first elastic substrate layer, the conductive line layer and the second elastic substrate layer are sequentially laminated, the composite structure thus formed has a non-stretchedcurved structure as a whole, the first elastic substrate layer is selected from one of a TPU elastic film, a PET elastic film or a PI elastic film, and the second elastic substrate layer is selected from one of the TPU elastic film, rubber, silicone rubber or a TPE elastic film. The telescopic flexible conductive film is advantaged in that the first elastic substrate layer, conductive lines and the second elastic substrate layer are jointly combined into a sandwich composite structure sandwiching among the conductive lines, the first elastic substrate layer and the second elastic substrate layer can provide effective surface protection and deformation buffering for the conductive lines disposed among the two, and the conductive film is kept light and thin and has good stretchability and bendability.
Owner:GUANGDONG NANHAI ETETB TECH CO LTD
Continuous sensor for detecting drum brake friction plates and drum brake
ActiveCN111911570AChange resistanceContinuous monitoring of wear levelsBrake actuating mechanismsMechanically actuated drum brakesControl engineeringControl theory
The invention relates to a continuous sensor for detecting drum brake friction plates and a drum brake, and belongs to the technical field of automobile drum brake detection. The continuous sensor comprises a sensor body, a sliding resistor and a flexible pulling part; the sensor body comprises a sensor housing and a sensor sliding core, wherein the sensor sliding core is located in the sensor housing and is in sliding connection with the sensor housing; the sliding resistor is located between the sensor housing and the sensor sliding core, and the resistance value of the sliding resistor is changed through relative sliding of the sensor housing and the sensor sliding core; and the flexible pulling part is connected with the sensor sliding core, and the flexible pulling part is used for pulling the sensor sliding core, so that the sensor sliding core linearly moves in the sensor housing. According to the continuous sensor, brake shoes and the sensor sliding core are connected through the flexible pulling part, the sliding resistor can continuously monitor the abrasion degree of the friction plates, and when the brake shoes retract, the flexible pulling part can guarantee that the resistance value of the sliding resistor is not changed, and the adverse effect of vibration on the continuous sensor and signals can be eliminated.
Owner:DONGFENG COMML VEHICLE CO LTD
Resistance compensation circuit and touch display device
PendingCN114327128AHigh precisionImprove accuracyInput/output processes for data processingControl signalElectrical connection
The invention provides a resistance compensation circuit and a touch display device. The resistance compensation circuit is configured to be electrically connected with a sensing module in a touch and display driver integrated chip in the touch display device. The resistance compensation circuit comprises a signal output unit and a resistor array which are electrically connected in sequence. The signal output unit is used for outputting a corresponding switch control signal based on the temperature of the touch display device; the resistor array is used for adjusting the resistance value of the resistor array based on the switch control signal, so that the resistance value variable quantity of the resistor array is equal to the resistance value variable quantity of a parasitic resistor of the touch display device, and the change direction of the resistance value of the resistor array is opposite to the change direction of the resistance value of the parasitic resistor. According to the invention, the resistance value of the resistive load of the sensing module can be kept unchanged, and the normal work of the interior of the touch and display driver integrated chip is ensured.
Owner:BEIJING ESWIN COMPUTING TECH CO LTD
Heater heating element manufacturing method
InactiveCN107447178ACompact structureSuitable for installationMolten spray coatingOhmic-resistance heatingThermal sprayingInsulation layer
The invention discloses a heater heating element manufacturing method. The heater heating element manufacturing method comprises the steps that a heater shell is polished through a sand blasting process; a buffer layer tool is placed on a heating area and fixed, and through a hot spraying process, a buffer layer is sprayed on the heating area; a first ceramic insulation layer shield tool is placed on the buffer layer and fixed, and through the hot spraying process, an aluminum oxide ceramic material is sprayed on the buffer layer to form a first ceramic insulation layer; a heat layer shield tool is placed on the first ceramic insulation layer and fixed, and a heating layer is sprayed on the first ceramic insulation layer through the hot spraying process; heating element electrodes are sprayed at the two ends on the heating layer; and after spraying of the heating layer is completed, a second ceramic insulation layer shield tool is placed on the heating layer and fixed, and through the hot spraying process, an aluminum oxide ceramic material is sprayed to form a second ceramic insulation layer. According to the heater heating element manufacturing method, the heat conducting efficiency can be improved, and through the hot spraying process, heating elements are sprayed on the surface of the heat exchange surface of a heater to be used as heat emitting sources of the heater.
Owner:ZHENJIANG HELMHOLTZ HEAT TRANSFER TRANS SYST CO LTD
Electrochemical demonstrator employing ion exchange membrane method
InactiveCN102568285ANo change in resistanceImprove efficiencyEducational modelsElectrical resistance and conductanceElectrolysis
The invention discloses an electrochemical demonstrator employing an ion exchange membrane method, comprising an anode chamber (1) and a cathode chamber (2), which are communicated with each other, wherein an ion exchange membrane is detachably arranged inside a third channel (14) communicating the anode chamber (1) and the cathode chamber (2); the anode chamber (1) and the cathode chamber (2) are respectively provided with an anode wiring pipe (11) and a cathode wiring pipe (21), and an injection pipe (12) and an exhaust pipe (13) are arranged at the top parts of the anode chamber (1) and / or the cathode chamber (2). The resistance of an electrode in the experiment process can be kept to be constant all the time by the structure. The demonstrator greatly increases the efficiency and stability of electrolyzing saturated salt water in comparison with the demonstrator in the prior art.
Owner:蔡逢春
Wire for multi-point wiring and processing method thereof
PendingCN109494001AGood connection strengthImprove stability and securitySoldered/welded conductive connectionsInsulated cablesElectricityElectrical connection
The invention discloses a wire for multi-point wiring and a processing method thereof, relating to the field of wire structures and processing methods. The wire for multi-point wiring comprises a mainwire and branch wires, a second core wire in the branch wire is welded and connected to the first core of the main wire, there are at least two branch wires, and the welding connection of the first core wire and the second core wire are covered with a third insulating layer. The wire is welded and connected with the branch wires through the main wire to allow the main wire and the branch wires tobe combined into one body in a seamless mode while having good connection strength, the resistance value at the welding connection is equivalent to the resistance value of the straight line section wire so as to improve the safety and stability of electrical connection; and the welding connection is coated with the third insulation layer to achieve a good water-proof insulation effect. The processing method provided by the invention can achieve rapid and effective processing of wires for multi-point wiring through removing of an insulation layer and combination processing of cutting, welding,injection molding and test.
Owner:广州电缆厂有限公司
A light exposure sensor based on reverse series memristor
ActiveCN107101718BRealize measurementConstant total resistancePhotometryObservational errorCurrent limiting
The invention discloses an exposure sensor based on memristors connected in reverse series. The exposure sensor comprises a first power supply V1, a second power supply V2, a switch K, a photoelectric module, a current-limiting module, an memristor module, a difference-acquiring module, an amplifying module, and an increasing module. The first power supply V1 or the second power supply V2 forms a circuit successively with the switch K, the photoelectric module, the current-limiting module and the memristor module. The memristor module includes memristors Mz1, Mz2, Mj1 and Mj2. The Mj1 and the Mj2 are completely the same. The Mz1 and the Mj1 are connected in series. The Mz2 and the Mj2 are connected in series. A series branch formed by the Mz1 and the Mj1 is connected in parallel with a series branch formed by the Mz2 and the Mj2. The difference-acquiring module is connected with the memristor module. The amplifying module is connected to the difference-acquiring module. The increasing module is connected with the amplifying module. The exposure sensor is large in exposure measurement range, high in sensitivity, suitable for the measurement of large exposure and long exposure, and is simple in circuit, avoids an influence of a memristor resistance value change on the loop current and the exposure measurement of the sensor, and is low in measurement error and easy to use.
Owner:常州正则高新科技有限公司
Deodorizing device with flaky filler
InactiveCN103623694ASolve the problem that the effective treatment area is greatly reducedIncrease the effective treatment areaDispersed particle separationAir quality improvementBiofilmMicroorganism
The invention relates to a gas processing device, in particular to a deodorizing device with a flaky filler. A circulating water system in the deodorizing device is arranged on the side surface of the deodorizing device; a gas inlet is formed at one end of the deodorizing device; a gas outlet is formed at the other end of the deodorizing device; the gas inlet and the gas outlet are both connected with a gas distributing device; a bottom water tank is arranged at the bottom of the whole deodorizing device; a top water-distributing and moisture-retaining device is arranged at the top of the whole deodorizing device. The flaky filler increases the effective area of a biofilm to 2-4 times that of spherical filler; the biofilm has a self-cleaning function and can maintain biological activity and constant total film amount for a long time, so as to ensure the smoothness of a gas processing passage and solve the problem that the lower layers of other fillers cannot form films because the biofilms increase and microorganisms die and accumulate; increase of wind resistance and energy consumption and reduction of a processing effect are solved better; the volume of the biological filler is reduced by half, so that the manufacturing cost is saved, operation and management are easier and the cost is lower.
Owner:SICHUAN HUANLONG TECH
Lithium ion adsorption column and preparation method thereof
InactiveCN104928471BCorrosion resistanceWith high pressureSolid sorbent liquid separationProcess efficiency improvementFiberLithium
The invention discloses a lithium-ion adsorption column. The lithium-ion adsorption column comprises a hollow column body formed by entanglement of thermoplastic polymer fibers, wherein a lithium-ion adsorbent is bonded to the column body, and the lithium-ion adsorbent is obtained after lithium-ions are eluted from a lithium-ion adsorption precursor. The invention further discloses a method for preparing the lithium-ion adsorption column. The method comprises the steps of A, heating and melting a thermoplastic polymer, and conducting spinning to form the thermoplastic polymer fibers; B, drawing the thermoplastic polymer fibers, spraying the lithium-ion adsorption precursor on the surfaces of the thermoplastic polymer fibers, and entangling the thermoplastic polymer fibers to form a lithium-ion adsorption precursor column which is of a hollow columnar structure; C, conducting cooling, lithium-ion elution, washing and drying on the lithium-ion adsorption precursor column to obtain the lithium-ion adsorption column. The method is simple, and the lithium-ion adsorption column has the advantages of being high in adsorbing capacity, high in adsorbing rate and the like in use.
Owner:QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI +1
A filter-type wet electrostatic precipitator and method
The invention discloses a filter-screen wet-type electric dust removing device. The electric dust removing device comprises a flue gas inlet device, a flue gas processing device and a flue gas discharging device, wherein the flue gas inlet device, the flue gas processing device and the flue gas discharging device are sequentially and closely connected with one another to form an integrated semi-enclosed device which is provided with openings in the two ends; a plurality of parallel anode plates and cathode wires arranged among the anode plates are arranged inside the flue gas processing device; dust collecting devices are arranged at the tail ends of the anode plates, and are used for capturing dust escaping from the tail ends of the anode plates. The electric dust removing device is efficiently intelligentized, and can effectively capture dust escaping along the surfaces of the dust collecting anode plates, increase the dust collecting areas of electric fields of dust removers, improve the dust collecting efficiency and avoid reentrainment pollution; in the wet-type soot cleaning process, the dust temperature can be further reduced, the dust moisture is increased, the dust specific resistance is reduced, and the dust removing efficiency is improved; meanwhile, when atmosphere hazardous materials are removed, effective ingredients in pollutants are extracted and converted into useful chemical fertilizers, low carbon and environment protection are realized, and the sustainable development of enterprises is facilitated.
Owner:YIXING IDEAL TECH CO LTD
Electric control solid thruster
InactiveCN114278463AChange thrustNo change in resistanceRocket engine plantsThermal insulationElectric control
The invention discloses an electric control solid thruster, belongs to the field of special solid propellant rocket engines, and aims to solve the problem of unstable thrust control of an existing end face combustion type thruster. According to the scheme, the square annular electrode comprises four electrode plates and a square fixing frame, and the four electrode plates define a square area which is adjustable in size and axially through; a heat insulation sleeve and a combustion electrode fixing sleeve are arranged in the shell side by side, the combustion electrode fixing sleeve clamps and fixes a combustion electrode, a square annular electrode is installed in a groove in the tail end of the heat insulation sleeve, the square annular electrode is of a structure with the two ends open, and the combustion electrode fixing sleeve is arranged at the tail end of an inner cavity of the shell and provided with an annular notch. The combustion electrode is clamped and fixed at the annular gap, and the annular gap is blocked, filled and leveled up by using the electrode pressing sheet; the tail end of the electric control solid propellant grain penetrates through a square area defined by the four electrode slices and abuts against the end face of the combustion electrode, and an axial working gap is formed between the square annular electrode and the combustion electrode.
Owner:HARBIN INST OF TECH
Novel aluminum foil flexible film and preparation method thereof
PendingCN111688291AAvoid damageHigh tensile strengthNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesFlexible circuitsOxidation resistant
The invention discloses a novel aluminum foil flexible film and a preparation method thereof. The novel aluminum foil flexible film comprises a surface film, a bottom film, two bonding flame-retardantlayers, an aluminum foil conductive layer and an aluminum foil bottom film, the aluminum foil conductive layer and the aluminum foil bottom film are arranged between the two bonding flame-retardant layers; and the surface film is adhered to the outer side of one bonding flame-retardant layer; and the bottom film is adhered to the outer side of the other bonding flame-retardant layer. Compared with a common aluminum foil, the novel aluminum foil flexible film is softer, meanwhile, the tensile strength is better, and the aluminum foil body can be effectively prevented from being damaged; oxidation resistance and flame resistance are achieved; the cost is lower; heating is more uniform; kneading resistance and water washing resistance are achieved; it is shown by experiments that the resistance is almost kept unchanged after multiple times of machine washing. Besides the heating industry, the film can also be applied to the fields of flexible circuits, heat conduction protection, electronic devices and the like.
Owner:东莞市昶暖科技有限公司
A Method for Improving Control Gate Filling Defects
ActiveCN108666211BVoid Defect EliminationNo change in resistanceSolid-state devicesSemiconductor devicesLow temperature depositionSemiconductor structure
The invention discloses a method for improving control gate filling defects. Polysilicon is deposited at a lower temperature on the surface of a semiconductor structure with a floating gate structure to form a polysilicon layer, and then the silicon wafer is subjected to high-temperature annealing treatment to make the polysilicon secondary grow. By adopting the technical solution of the invention, void defects during filling of polysilicon can be eliminated, while the resistance value of polysilicon and the mobility of carriers are kept unchanged, meeting the process requirements.
Owner:WUHAN XINXIN SEMICON MFG CO LTD
A self-calibration method of 2/1 voltage division ratio of a voltage divider
ActiveCN105137378BReduce the absolute valueNo change in resistanceElectrical measurementsVoltage ratioVoltage divider
The invention provides a 2 / 1 voltage ratio self-calibration method of a voltage divider. The 2 / 1 voltage ratio self-calibration method comprises the steps of a step 1, applying a DC voltage U1 on a tested voltage divider and a reference voltage divider, measuring a voltage difference deltau1 between a resistor RY in the tested voltage divider and a resistor R2 in the reference voltage divider; a second step, interchanging the positions of a resistor RX and the resistor RY in the tested voltage divider; a third step, applying a DC voltage U2 on the tested voltage divider and the reference voltage divider, measuring a voltage difference deltau2 between the voltage of the resistor RX in the tested voltage divider and the voltage of the resistor R2 in the reference voltage divider; and a fourth step, according to the U1, U2, deltau1 and deltau2, calculating the actual voltage ratio K and a measuring uncertainty d of the tested voltage divider. Compared with the prior art, the 2 / 1 voltage ratio self-calibration method of the voltage divider is advantageous in that the 2 / 1 voltage ratio of the voltage divider can be accurately acquired without direct measurement for a resistance or use of a standard voltage divider with a higher accuracy grade.
Owner:CHINA ELECTRIC POWER RES INST +3
A low-power aluminum alloy cement resistor
ActiveCN105575565BExtended service lifeImprove cooling effectCoil/loop resistive elementsResistor detailsElectrical resistance and conductanceHeat conducting
The invention belongs to the technical field of resistors, and particularly discloses a low-power aluminum alloy cement resistor. The low-power aluminum alloy cement resistor comprises a strip box cover, a strip bottom shell, wherein a first U-shaped groove and a second U-shaped groove are arranged at two ends of the strip box cover; strip buckles are symmetrically arranged at two sides of the strip box cover; a first clamping groove and a second clamping groove are arranged at two ends of the strip bottom shell; strip clamping plates are symmetrically arranged at two sides of the outside of the strip bottom shell; a ceramic shaft rod and a resistance wire are arranged in the strip bottom shell; and lead-out wires are arranged at two ends of the ceramic shaft rod. The low-power aluminum alloy cement resistor has the beneficial effects that (1) an aluminum alloy shell is relatively good in heat dissipation performance, and is filled with insulating and heat-conducting materials when produced, so that the service lifetime of the resistor is prolonged; (2) the low-power aluminum alloy cement resistor is simple to assemble and fit, and high in production efficiency; (3) the error is small and is within a range from +5% to -5%; and the control accuracy is high; and (4) an alloy resistance wire is low in noise, resistant to short-time overload, free of a change in resistance value and stable in performance. Meanwhile, the low-power aluminum alloy cement resistor is simple in structure, low in production cost and easy to popularize.
Owner:SUZHOU ZHILVE INTELLECTUAL PROPERTY OPERATION CO LTD
Annealing device capable of preventing sparking and eliminating resistance for power cable
ActiveCN109338089AImprove surface qualityAvoid stretchingFurnace typesHeat treatment furnacesPower cableEngineering
The invention discloses an annealing device capable of preventing sparking and eliminating resistance for a power cable. The annealing device structurally comprises a reinforcing base, pay-off discs,a top seat and a contact electric brush annealing machine. The pay-off discs are arranged at the upper end of the reinforcing base, the top seat is fixedly mounted at the top end of the reinforcing base, the pay-off discs are located at the left end of the contact electric brush annealing machine, the bottom end of the contact electric brush annealing machine is fixedly mounted on the reinforcingbase, and the top end of the contact electric brush annealing machine is fixedly connected with the top seat. The cable is extruded through extrusion cable contact mechanisms, it is guaranteed that contact between the cable and an electrode wheel is better, the sparking phenomenon is reduced, meanwhile, sparking can be eliminated through sparking eliminating electrodes, and the surface quality ofthe cable is improved. In the rotating process of the electrode wheel, when the resistance is increased, heat generated by the electrode wheel is increased, at the moment, a hot air thrust mechanism absorbs hot air and applies certain thrust to the electrode wheel, the electrode wheel normally rotates, it is guaranteed that the resistance is unchanged, the cable is prevented from being stretched,and it is guaranteed that the forming wire diameter of the cable is consistent front and back.
Owner:JUNLANG ELECTRICAL CO LTD
Method for improving filling defect of control gate
ActiveCN108666211AVoid Defect EliminationNo change in resistanceSolid-state devicesSemiconductor devicesSemiconductor structureEngineering
The invention discloses a method for improving filling defect of a control gate. Poly-silicon is deposited on a surface of a semiconductor structure already formed with a floating gate structure at arelatively low temperature so as to form a poly-silicon layer, and high-temperature annealing is performed on a silicon wafer so that the poly-silicon is secondarily grown. With the method disclosed by the technical scheme of the invention, the hole defect during poly-silicon filling can be eliminated, meanwhile, the resistance value of the poly-silicon and the carrier mobility are maintained unchanged, and the process requirement is achieved.
Owner:WUHAN XINXIN SEMICON MFG CO LTD
Circuit for trimming and detecting fuse of integrated circuit
InactiveCN112098804AReduce the impactNo change in resistanceElectronic circuit testingSemiconductor/solid-state device detailsIntegrated circuitEngineering
The invention relates to a circuit for trimming and detecting a fuse of an integrated circuit. The circuit comprises a first diode, a second diode, a fuse and a plurality of resistors. According to the circuit for trimming and detecting the fuse of the integrated circuit, the fuse structure can be fused after trimming is completed, a test point is disconnected with an internal circuit after fusing, other connections are isolated by a resistor or a diode, and the overall resistance value of the fuse before and after fusing is basically kept unchanged, so that the influence on the integrated circuit is reduced.
Owner:苏州晶耀信息科技有限公司
Efficient washing device and method of catalyst in reaction gas
InactiveCN104548819ASpray evenlyFully contactedUsing liquid separation agentFluidized bedProcess engineering
The invention relates to an efficient washing device and method of a catalyst in reaction gas, and aims at mainly solving the problems in the prior art that the washing efficiency of the catalyst in the reaction gas at an outlet of a methanol-to-olefin fluidized bed reactor is low, the catalyst powder enters a subsequent system along the reaction gas to block equipment including a subsequent tower device, a heat exchanger and the like and a pipeline so that the operation period of the device is shortened. The problems are solved very well by adopting the technical scheme that the efficient washing device is composed of a shell, a reaction gas inlet, a reaction gas outlet, a reaction gas washing liquid inlet and a catalyst washing liquid outlet, wherein washing liquid spraying layers composed of nozzles which are arrayed according to a geometrical shape are arranged above the reaction gas inlet in the washing device and at the reaction gas washing liquid inlet; the included angle between the central lines of the spraying directions of the upper and lower adjacent spraying layers is 0-180 degrees; and reaction gas washing liquid is in contact with the reaction gas to wash the reaction gas. The efficient washing device can be used for an industrial methanol-to-olefin device.
Owner:CHINA PETROLEUM & CHEM CORP +1
An annealing device for anti-ignition and anti-resistance for power cables
ActiveCN109338089BImprove surface qualityAvoid stretchingFurnace typesHeat treatment furnacesPower cableBrush
Owner:JUNLANG ELECTRICAL CO LTD
Heat regeneration device utilizing compressed air waste heat
InactiveCN107859540AIncrease intake air temperatureExtended flow timeSteam engine plantsRecuperatorEngineering
The invention relates to the technical field of compressed air energy storage, and provides a heat recovery device utilizing the residual temperature of compressed air. The device includes a sealing tube, an end cover and a spiral fin. The sealing tube is sleeved on the compressed air delivery tube used to communicate with the throttling device and the turbine. The spiral fin is arranged between the compressed air delivery tube and the sealing tube. Between the outer wall of the compressed air delivery pipe and the inner wall of the sealing pipe, a spiral air channel is formed. One end cover of the sealing pipe is provided with an end cover, and the end cover is provided with an air intake pipe and a compressed air delivery pipe. One end of the inlet pipe communicates with the inlet of the spiral air channel, and the other end is used to communicate with the exhaust port of the turbine. The invention not only realizes the effective utilization of the residual temperature of the exhaust gas of the turbine, but also improves the inlet temperature and system efficiency of the turbine. In addition, because the present invention does not change the flow channel inside the compressed air delivery pipe, it avoids additional pressure loss during compressed air delivery.
Owner:TSINGHUA UNIV
A wet porous roller shutter electrostatic precipitator
InactiveCN106238210BSimple structureEasy maintenanceExternal electric electrostatic seperatorElectrodes cleaningThermodynamicsDust control
Owner:WUHAN UNIV OF SCI & TECH
Continuous sensor for detecting drum brake friction plate and drum brake
ActiveCN111911570BChange resistanceContinuous monitoring of wear levelsBrake actuating mechanismsMechanically actuated drum brakesControl engineeringControl theory
The application relates to a continuous sensor for detecting drum brake friction plates and drum brakes, belonging to the technical field of automobile drum brake detection, including: a sensor body, which includes a sensor housing and a sensor sliding core, and the sensor sliding core is located in the sensor housing And it is slidingly connected with the sensor housing; the sliding resistor is located between the sensor housing and the sensor sliding core, and the sensor housing and the sensor sliding core change the resistance value of the sliding resistor through relative sliding; the flexible pulling part, the flexible pulling The part is connected with the sensor sliding core, and the flexible pulling part is used to pull the sensor sliding core to make the sensor sliding core move linearly in the sensor housing. The brake shoe of this application is connected to the sliding core of the sensor by a flexible pulling part, and the sliding resistor can continuously monitor the wear degree of the friction plate. When the brake shoe is retracted, the flexible pulling part can ensure the resistance of the sliding resistor Unchanged, it can also eliminate the adverse effects of vibration on the continuous sensor itself and the signal.
Owner:DONGFENG COMML VEHICLE CO LTD
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com