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45 results about "Galvanostat" patented technology
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A galvanostat, (also known as amperostat) is a control and measuring device capable of keeping the current through an electrolytic cell in coulometric titrations constant, disregarding changes in the load itself. Its main feature is its nearly "infinite" (i.e. extremely high in respect to common loads) internal resistance. The designation "galvanostat" is mainly used in electrochemistry: this device differs from common constant current sources by its ability to supply and measure a wide range of currents (from picoamperes to amperes) of both polarities.
Electro-active sensor, method for constructing the same; apparatus and circuitry for detection of electro-active species
An electro-active sensor includes a nonconductive platform with a first electrode set attached with a first side of a nonconductive platform. The first electrode set serves as an electrochemical cell that may be utilized to detect electro-active species in solution. A plurality of electrode sets and a variety of additional electrochemical cells and sensors may be attached with the nonconductive platform. The present invention also includes a method for constructing the aforementioned electro-active sensor. Additionally, an apparatus for detection and observation is disclosed, where the apparatus includes a sealable chamber for insertion of a portion of an electro-active sensor. The apparatus allows for monitoring and detection activities. Allowing for control of attached cells and sensors, a dual-mode circuitry is also disclosed. The dual-mode circuitry includes a switch, allowing the circuitry to be switched from a potentiostat to a galvanostat mode.
Owner:CALIFORNIA INST OF TECH
Light-emitting diode (LED) driving power supply and LED lighting lamp
InactiveCN102752913AThe solution cannot be unifiedSolve the bottleneck problem that cannot be used universallyElectric light circuit arrangementEffect lightHigh-voltage direct current
The invention discloses a light-emitting diode (LED) driving power supply and an LED lighting lamp. The LED lighting lamp comprises an LED light source chip, a substrate, the LED driving power supply and a lamp casing. The LED light source chip is arranged on the substrate to form an LED lamp panel fixedly arranged in the lamp casing. The LED driving power supply comprises a bridge rectifier circuit, a power factor corrector circuit and a galvanostat circuit which are sequentially electrically connected. The input end of the bridge rectifier circuit is used for being connected with an external power supply, and the output end of the galvanostat circuit is connected with the LED light source chip. The rated forward voltage of the LED light source chip is no higher than the direct-current voltage output by the power factor corrector circuit. In the LED lighting lamp, high-voltage direct-current voltage is subjected to constant current and then directly drives the LED light source chip. The LED driving power supply is simple in structure, small in loss, high in efficiency and strong in generality, and therefore general utilization of the LED lighting lamp can be achieved.
Owner:中山天外天防爆照明有限公司 +1
Self-feedback linear galvanostat integrating adjustable thermistor
InactiveCN102832219AOutput current adjustableAdjustable sizeTransistorElectrical resistance and conductanceLaser cutting
The invention relates to a self-feedback linear galvanostat integrating an adjustable thermistor, which belomngs to the technical field of a semiconductor power device. The self-feedback linear galvanostat comprises a junction-type field effect transistor (JFET) and an adjustable thermistor, which are integrated together, wherein one end of the adjustable thermistor is connected with a JFET source electrode, and the other end is connected with a grid electrode of the JFET. The self-feedback linear galvanostat is centralized on the adjustable thermistor, and the adjustable thermistor can obtain a resistance value meeting the requirement of the output current through a laser cutting way, so that different types of products can be obtained in the same batch. The thermistor is a positive temperature coefficient, under the working situation, the temperature is increased, the resistance is increased, the output current is reduced, and the reliability of an application system is protected. The self-feedback linear galvanostat has advantages of high integration, stability in output current, adjustability of the current and good temperature property and can be applied to the fields such as light emitting diode (LED).
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Method of in-situ monitoring a reduction of uranium oxides by lithium metal
InactiveUS7390392B1Simplified of conversion yieldEasy to measureFrom normal temperature solutionsElectrolysis componentsLithium oxideUranium oxide
Disclosed is a method of in-situ monitoring a reduction process of uranium oxides by lithium metal, wherein a conversion yield of uranium metal from uranium oxides upon production of uranium metal through a reaction of uranium oxides (UOx, x≦3) with lithium metal in the presence of a high-temperature molten salt is measured according to an electrochemical analysis based on an oxidation of an oxygen ion and a reduction of a lithium ion dissociated from lithium oxide obtained as a by-product of the reaction, by use of a measuring device composed of a potentiostat / galvanostat and a reactor provided with an anode and a cathode. The in-situ monitoring method of the current invention is advantageous in terms of fast and simplified measuring techniques, by directly measuring the reduction process of uranium oxides at the anode and cathode connected to the potentiostat / galvanostat in the presence of the high-temperature molten salt.
Owner:KOREA ATOMIC ENERGY RES INST +1
Heat-dissipation structure of light-emitting diode (LED) daylight lamp
InactiveCN102980052AIncrease cooling areaMeet temperature requirementsPoint-like light sourceLighting heating/cooling arrangementsDaylightEngineering
The invention relates to a heat-dissipation structure of a light-emitting diode (LED) daylight lamp. A metal heat-dissipation inner sleeve is arranged inside a glass tube outer cover or a full-plastic tube outer cover, an LED lamp panel is fixedly connected with a lamp bead heat conductive plate and is placed on bulged strips of the metal heat-dissipation inner sleeve, and two sides of the lamp bead heat conductive plate are attached to two inner sides of the metal heat-dissipation inner sleeve. The outer wall of the metal heat-dissipation inner sleeve is attached to the inner wall of the tube outer cover, and therefore the heat-dissipation area of the lamp bead heat conductive plate is increased, the requirement for the temperature for the long service lives of LED beads is basically met, and an LED galvanostat is convenient to assemble. The heat-dissipation structure of the LED daylight lamp enables products to meet the international electrotechnical commission 60598 (IEC) standard requirement, avoids the phenomenon of electric shock, guarantees safe use of the LED daylight lamp, and enables the service life of the LED daylight lamp to be effectively guaranteed at the same time, thereby effectively promoting the development of the LED daylight lamp.
Owner:黄嘉宾
On-line gas density measuring method
ActiveCN103616313ASimple structureLow costSpecific gravity by measuring pressure differencesDifferential pressureEngineering
The invention provides an on-line gas density measuring method which realizes the parameter measurement by utilizing a measuring device; the measuring device comprises a galvanostat, a throttle, a differential pressure sensor and a computer, wherein the inlet end of the galvanostat is connected with measured gas, and the outlet end of the galvanostat is communicated with air through the throttle; two air pressure input interfaces of the differential pressure sensor are connected with pressure sampling pipes at two sides of a throttle hole of the throttle, and the signal output end of the differential pressure sensor is connected with the input port of the computer; during testing, the measured gas continuously flows through the galvanostat and the throttle sequentially, the pressure difference Delta between two ends of the throttle are measured at the same time, then the density of the measured gas is calculated by using the following formula: p:p=2*deltaP / (qV / C / (1-Beta4)0.5*epsilon*Pi / 4*d2)2. Due to the adoption of the method, not only is the on-line measurement of the gas density realized, but also the measuring device is simple in structure, low in cost, and exact and reliable in measuring structure, and furthermore, a condition is created for the accurate measurement of flow of mixed gas and the accurate control of gas density.
Owner:河北方矩自动化设备科技有限公司
Three-terminal self-feedback linear galvanostat and manufacturing method thereof
InactiveCN102437159AProtection from voltage surgesConstant brightnessTransistorSemiconductor/solid-state device manufacturingEtchingLow voltage
The invention discloses a three-terminal self-feedback linear galvanostat and a manufacturing method thereof, aiming at solving the technical problems of high cost performance and LED driving reliability. The three-terminal self-feedback linear galvanostat consists of a field effect transistor, a resistor and an adjustable resistor, wherein the source end of the field effect transistor is connected with one end of the resistor; the gate end of the field effect transistor is connected to the other end of the resistor; and the adjustable resistor is connected with the resistor in parallel. The manufacturing method disclosed by the invention comprises the following steps of: preparation of an epitaxial layer, ion implantation and knot-pushing, ion implantation, chemical vapor deposition, polycrystalline deposition and etching, etching of contact holes as well as metal deposition and etching. Compared with the prior art, the three-terminal self-feedback linear galvanostat has the advantages that: constant current output is kept at the same time of increasing alternating current voltage, an LED is powered on without delaying after reaching an LED threshold voltage, the LED keeps bright at low voltage, the LED is protected from being affected by voltage surge, the brightness of the LED is kept constant under the wide-voltage range, the LED is protected in the high input voltage, and low cost and output stability are achieved.
Owner:深圳市芯威科技有限公司
Internal-resistance measuring device for response-delay type fuel cell
InactiveUS20110020671A1Good reproducibilityFuel cell auxillariesElectrical testingElectrical resistance and conductanceMicrobial fuel cell
One object is to provide a measuring device configured to evaluate the power generation characteristics of a response-delay type fuel cell automatically, precisely, and with excellent reproducibility with consideration of the response delay against power load fluctuations, and effectively acclimatize and develop microorganisms that are provided to generate power. A potentio-galvanostat is connected to a microbial fuel cell provided as an exemplary response-delay type fuel cell. Further, an automatic measuring device is connected to the potentio-galvanostat. The automatic measuring device has a program function and measures the internal resistance of the microbial fuel cell at set time. The internal resistance measurement is executed through the automatic measuring device that instructs the potentio-galvanostat to change a current value flowing to the microbial fuel cell and that repeatedly executes the process of measuring and recording a voltage value of the microbial fuel cell and the current value while changing a current control value in stages after the voltage value is stabilized.
Owner:KAJIMA CORP
In-situ hydrogen display detection device and method
ActiveCN110954586AUnderstand the impact of captureThe test result is accurateMaterial analysis by electric/magnetic meansMaterial analysis by transmitting radiationEngineeringElectrochemistry
The invention discloses an in-situ hydrogen display detection device and a detection method. The in-situ hydrogen display detection device comprises a first box body, a second box body, a galvanostatand a heating mechanism, a box cover is arranged at the top of the first box body, a first air inlet and a first air outlet are formed in the box cover, a first opening is formed in the bottom of thefirst box body, and a metal platinum sheet is arranged in the first box body; the second box body is arranged at the bottom of the first box body and is detachably connected with the first box body, the bottom of the second box body is provided with a liquid inlet and a second air outlet, the top of the second box body is provided with a second end opening opposite to the first opening, and the opening edge of the second end opening and the opening edge of the first opening are arranged in a spaced mode; the positive electrode of the galvanostat is electrically connected with the metal platinum sheet, and the negative electrode of the galvanostat is used for being connected with metal to be detected; the heating mechanism is used for providing heat for the second box body. According to themethod, different metals can be subjected to electrochemical hydrogen charging, so that the influence of microdefects in the metals on hydrogen capture can be conveniently detected in situ.
Owner:WUHAN UNIV OF SCI & TECH
Galvanostat with mother valve and child valve
A galvanostat with a mother valve and a child valve mainly comprises a base as well as the mother valve and an elastic device which are arranged in the base, wherein an adjusting device is arranged in an overflowing hole of the mother valve, and used for adjusting the flow when an outlet is blocked by the mother valve driven by pressure.
Owner:李能
Device and method for electrochemical hydrogen permeation measurement in high-temperature environment
ActiveCN110687019AExtended working temperature rangeLow costSurface/boundary effectMaterial electrochemical variablesElectrolytic agentO-Phosphoric Acid
The invention discloses a device and method for electrochemical hydrogen permeation measurement in a high-temperature environment and belongs to the field of electrochemical hydrogen permeation measurement technologies. The device comprises a cathode chamber, an anode chamber, an external circulating constant-temperature oil bath device, a constant current meter, an electrochemical workstation anda data collection device, wherein an electrolytic solution is contained in the cathode chamber and the anode chamber, organic alcohol with a melting point lower than 80 DEG C and a boiling point greater than 150 DEG C is used as a matrix of the electrolytic solution, phosphoric acid and phosphate are dissolved in the matrix, and the organic alcohol can dissolve the phosphoric acid and the phosphate in an 80-150 DEG C working environment. The test method comprises the steps that a sample is fixed into a double-electrolytic cell, the electrolytic solution is added into the cathode chamber and the anode chamber, and the external circulating constant-temperature oil bath device is utilized to maintain an electrochemical hydrogen permeation test in the cathode chamber and the anode chamber inthe 80-150 DEG C high-temperature environment. Through the device and method, the problem that electrochemical hydrogen permeation is unavailable under the temperature of 80 DEG C or above is solved,the temperature range of the electrochemical hydrogen permeation test is expanded, and important scientific research value is obtained.
Owner:HUAZHONG UNIV OF SCI & TECH
Apparatus for analyzing the elemental composition of a liquid sample and methods of using the same
ActiveCN109690296AWithdrawing sample devicesPreparing sample for investigationAnalyteOptical spectrometer
A device and method is described for analyzing the elemental composition of a liquid sample utilizing a combination of electrochemical pre-concentration followed by spectrochemical analysis of analytein a single device. The device consists of two electrodes for the purpose of pre- concentration of the analyte ions by electro-deposition, a DC power supply / potentiostat / galvanostat, a high voltage power supply capable of creating an electrical discharge such as arc, spark, glow discharge or plasma, a spectrometer capable of recording a spectrum generated during such discharges as well as a pump(s) for pumping the analyte containing solution. Such a device is autonomous, field-deployable and capable of providing online analysis.
Owner:阿格尼丝奥布肖斯卡
High-precision electronic blood pressure detector
InactiveCN102397065AHighly integratedMeet the general requirements for measurementAngiographyAnti jammingMorphological filtering
The invention discloses a high-precision electronic blood pressure detector, relating to a blood pressure detector. The high-precision electronic blood pressure detector comprises a power supply, a sensor, a sleeve strap, a galvanostat, a 16-bit Sigma-Delta A / D (Analog / Digital) converter, an air pump, a keyboard display and an air valve; the power supply is connected with the sensor; the sensor is connected to the 16-bit Sigma-Delta A / D converter; the sleeve strap is connected to the sensor; the air pump is connected to the galvanostat; the keyboard display 7 is connected with the 16-bit Sigma-Delta A / D converter to each other; and the air valve is connected with the 16-bit Sigma-Delta A / D converter. The high-precision electronic blood pressure detector disclosed by the invention has the advantages of high hardware integration level, simpleness and convenience for design and implementation, integration of multiple advanced algorithms, such as morphological filtering and the like in software design, high accuracy, strong anti-jamming property, favorable precision and capability of meeting general requirements of blood pressure measurement.
Owner:王晓宏
Corrosion measurement device
ActiveCN111788478AWeather/light/corrosion resistanceMaterial capacitanceElectrical connectionStructural engineering
Apparatus (200) for detecting corrosion of a coating (250) of an object (216), the apparatus comprising: an electrically conductive body (202) defining a cavity (204) for containing an electrolyte (206), the body (202) arranged to be, in use, in electrically conductive contact with the object (216) and arranged to isolate, in use, the electrolyte (206) from the object; and a first electrode (208)within the cavity (204), the first electrode (208) for electrical connection to a potentiostat (402) or to a galvanostat and arranged to be, in use, in electrical contact with the electrolyte (206) inthe cavity (204); wherein the body (202) comprises a first part (222) and a second part (224), the second part (224) being slidably movable relative to the first part (222) between a retracted position and an extended position.
Owner:BOURNEMOUTH UNIV HIGHER EDUCATION CORP
Device for simulating and evaluating damages of recharge to stratum
The invention discloses a device for simulating and evaluating damages of recharge to a stratum. The device comprises a gas cylinder, a sucking pump, a pressure stabilizer, a galvanostat, a buffer chamber, a liquid storage tank, a first liquid sucking pump, a stirring barrel, a first valve, a second liquid sucking pump, a sterilization device, a first flow meter, a first pressure meter, a second pressure meter, a second flow meter, a liquid discharging pipe, a waste liquid barrel, a salt adding device and a sample holder, and can simulate and evaluate damages of recharge to the stratum.
Owner:CHINA HUANENG GRP CO LTD +1
An industrial flue gas membrane dust collector
ActiveCN105107370BIncrease contact reaction areaEfficient removalCombination devicesElectrode constructionsMembrane methodFlue gas
Owner:湖南省小尹无忌环境能源科技开发有限公司
Geologic energy storage pin
InactiveCN104578434AConstant energy storageElectrical storage systemBatteries circuit arrangementsEngineeringGalvanostat
A geologic energy storage pin comprises a pin socket and a storage battery galvanostat, wherein the storage battery galvanostat comprises a resistance pressure electromagnetic coil, a primary rectifier bridge, a secondary rectifier bridge and an energy-storage parallel metal plate, which are connected in series. The geologic energy storage pin effectively avoids the effect that the service cycle of an energy storage device is shortened to less than one hour, which is very bad for field operation.
Owner:XIAN HUIKE GEOLOGICAL TECH SERVICES
Solar streetlamp system
InactiveCN103002617ATake advantage ofGuaranteed working electricityElectric light circuit arrangementEnergy efficient lightingElectricitySolar street light
A solar streetlamp system comprises a solar cell panel, a solar controller, a storage cell, a galvanostat and a streetlamp. The solar cell panel is connected with an input end of the solar controller, a control end of the solar controller is connected with the streetlamp by the galvanostat, and an output end of the solar controller is connected with the storage cell. The solar streetlamp system has the advantages that the storage cell can supply power for the streetlamp at night after being fully charged in daytime, so that consumed working power of the streetlamp can be guaranteed, the solar streetlamp system is energy-saving and environment-friendly, solar energy is sufficiently utilized, and mains supply is saved.
Owner:大连艾珂光电技术有限公司
LED constant-current driver overvoltage and overcurrent protection module
InactiveCN103517481ASimple structureStable jobElectric light circuit arrangementEmergency protective arrangements for limiting excess voltage/currentOvervoltageCurrent limiting
The invention relates to an LED constant-current driver overvoltage and overcurrent protection module. The protection module is arranged between a driver and a load. The protection module comprises an overvoltage diode D1 and resistors R1 and Rcs. The output part is protected by the use of the overvoltage diode D1. If an output voltage of a galvanostat is too high (higher than a voltage regulation value of D1), the output voltage will be limited at the voltage regulation value of D1 so as to prevent LED damage caused by overvoltage. According to the output part, the resistor Rcs is used as a current limiting resistor of an output load. If output current exceeds service power of the resistor, the resistor will protect safety of LED due to insufficient power.
Owner:JIANGSU SMILE OPTOELECTRONICS TECH
Safety power supply for energy-saving electrical appliance
InactiveCN104349525AGuaranteed operating efficiencyStable voltageElectric light circuit arrangementEnergy saving control techniquesEngineeringGalvanostat
The invention discloses a safety power supply for an energy-saving electrical appliance. Compared with the prior art, the safety power supply disclosed by the invention has the beneficial effects that a power-off time delay relay and a voltage-stabilizing rectifier are connected in series and then are in series connected with a plurality of galvanostats which are mutually connected in parallel, so that the voltage and the current can be stabilized, and the operation efficiency of the energy-saving electrical appliance is guaranteed; by using the power-off time delay relay, unnecessary loss caused by accident power outage can be prevented.
Owner:施晨玮
Linear high-power-factor driving circuit
PendingCN109618469AImprove power factorMeet technical requirementsElectrical apparatusElectroluminescent light sourcesDriver circuitCapacitance
The invention discloses a linear high-power-factor driving circuit. The linear high-power-factor driving circuit comprises a power supply, a rectifier and a plurality of driving circuit units, whereinthe power supply is connected with the first driving circuit unit through the rectifier; each driving circuit unit comprises an LED load, an electronic filter, an electrolytic capacitor, a galvanostat segmented circuit unit and a current detection resistor; the LED load and the electronic filter are connected in series to form a first branch to be connected with the electrolytic capacitor in parallel; the first branches of the adjacent driving circuit units are connected through an isolation sectionalizer; the output end of the first branch is connected with the input end of the galvanostat segmented circuit unit, and the output end of the galvanostat segmented circuit unit is connected with one end of the corresponding current detection resistor; and the current detection resistors in the adjacent driving circuit units are sequentially connected in series, and the current detection resistor in the last driving circuit unit is grounded. According to the linear high-power-factor driving circuit, the segmented working mode is adopted, so that the working current waveform of the load follows the voltage waveform, thereby improving the power factor.
Owner:SUZHOU FEIDAXU MICRO ELECTRONICS CO LTD
Device for measuring permeability of filter
PendingCN113624657AImprove stabilityImprove reliabilityPermeability/surface area analysisAir volumeWater flow
The invention discloses a device for measuring permeability of a filter and belongs to the fields of water environment, traffic, chemistry and the like. The device comprises a galvanostat, a galvanostat connecting pipe, a pressure stabilizing tank, a pressure gauge, a valve, a sample container and a sample connecting pipe. The test process is completed on weighing equipment; before the test is started, the valve is closed, flowing water flow is introduced above the galvanostat until water flows out of an overflow port and the water flow is stable, and at the moment, the total weight of the device before the test is recorded; the valve is opened, the water flow starts to uniformly flow into the pressure stabilizing tank, and the reading of the pressure gauge and the test starting time are recorded; the test is ended when the liquid level of the pressure stabilizing tank rises to the lower edge of the glass tube, connected with the pressure stabilizing tank, of the galvanostat, and the total weight of the device and the test ending time are recorded; the air volume is calculated according to the weight difference, water and the air density under the corresponding pressure, and then the permeability index of the filter is calculated. The constant water flow device is adopted to replace a conventional air source method, so that the pressure is more constant and controllable; and the accuracy of measuring the permeability of the filter is improved.
Owner:RES INST OF HIGHWAY MINIST OF TRANSPORT
Steel-aluminum joint construction structure navigation administration boat
The invention discloses a steel-aluminum joint construction structure navigation administration boat. The boat structurally comprises a main unit, a marine gearbox, a pushable device, a vibration isolator, a marine diesel engine, a butterfly valve, a connecting pipe, a steering engine galvanostat, a suction water outlet pipe, an electric general pump, a clean water pump and pressure water tank, adirty oil hand pump, a steering engine power source, a fuel oil hand pump, a marine blower, a marine ventilator, a main unit water tank, a main switchboard and a main unit start storage battery. According to the steel-aluminum joint construction structure navigation administration boat, the port of an engine room is provided with the main switchboard, a natural ventilator, a group of daily lighting storage battery, a dirty oil tank, the dirty oil hand pump, the electric general pump, a daily oil tank and the fuel oil hand pump from rear to front in sequence, the starboard of the engine room isprovided with a main and auxiliary equipment starting storage battery, the marine blower, the clean water pump and pressure water tank, a faeces crushing pump and the like from rear to front in sequence, more functions are achieved, and the boat can adapt to more cases occurring on the sea.
Owner:JIANGSU SHIP DESIGN & RES INST
Semiconductor linear galvanostat
InactiveCN102800669ASimple structureGood constant current effectSolid-state devicesElectric light circuit arrangementMOSFETField-effect transistor
The invention discloses a semiconductor galvanostat which belongs to the technical field of semiconductor devices. The semiconductor galvanostat comprises an MOSFET (Metal Oxide Semiconductor Field Effect Transistor) (14), a voltage stabilizing diode (13) and a current limiting resistor (12) which are integrated on the same chip. One end of the voltage stabilizing diode is connected with the grid G of the MOSFET, the other end of the voltage stabilizing diode is connected with the source S of the MOSFET, one end of the current limiting resistor is connected with the drain D of the MOSFET, and the other end of the current limiting resistor is connected with the grid G of the MOSFET. The voltage stabilizing diode can be used for clamping a voltage of the grid of the MOSFET, so that the current ID of a drain source of the MOSFET is maintained constant; and the current limiting resistor R can inhibit the current of the voltage stabilizing diode. The current limiting resistor can be a polycrystalline silicon resistor and also be a trap resistor. The semiconductor galvanostat has the characteristics of simple structure, remarkable constant current effect, and stable temperature, and can be used as an LED illumination load constant-current drive source.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Balancing method for battery cells in battery pack
PendingCN114678931AReduce temperature riseAvoid the risk of short circuit fireCharge equalisation circuitSecondary cells charging/dischargingBattery cellGalvanostat
The invention provides a method for balancing battery cells in a battery pack, and belongs to the technical field of electric automobiles or energy storage systems. A galvanostat is arranged on each battery cell control panel; the battery cell control board is communicated with the battery pack control board, a battery cell information acquisition device is arranged on the battery cell control board, and the battery cell information is transmitted to the battery pack control board by the battery cell control board; and the battery pack control panel transmits a balancing command to the battery cell control panel according to the battery cell information, and the battery cell control panel executes balancing of the battery cells according to the command. The battery cell equalization can be realized without leading out an equalization line from each battery cell, and the risk of short-circuit fire is avoided; and the temperature rise of the battery pack is reduced.
Owner:SHANDONG JIAOTONG UNIV
A Self-feedback Linear Constant Current Regulator Integrated with Adjustable Thermistor
The invention relates to a self-feedback linear galvanostat integrating an adjustable thermistor, which belomngs to the technical field of a semiconductor power device. The self-feedback linear galvanostat comprises a junction-type field effect transistor (JFET) and an adjustable thermistor, which are integrated together, wherein one end of the adjustable thermistor is connected with a JFET source electrode, and the other end is connected with a grid electrode of the JFET. The self-feedback linear galvanostat is centralized on the adjustable thermistor, and the adjustable thermistor can obtain a resistance value meeting the requirement of the output current through a laser cutting way, so that different types of products can be obtained in the same batch. The thermistor is a positive temperature coefficient, under the working situation, the temperature is increased, the resistance is increased, the output current is reduced, and the reliability of an application system is protected. The self-feedback linear galvanostat has advantages of high integration, stability in output current, adjustability of the current and good temperature property and can be applied to the fields such as light emitting diode (LED).
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Improved mobile power source
InactiveCN105337343AAvoid damageExtended service lifeBatteries circuit arrangementsElectric powerElectricityLithium iron phosphate
The invention relates to an improved mobile power source, which comprises an outer shell, wherein a control circuit board is arranged inside the outer shell; the upper part of the control circuit board is connected with a power inlet galvanostat and then connected with a power inlet socket on the outer shell, and the lower part of the control circuit board is connected with a power outlet galvanostat and then connected with a lithium iron phosphate battery pack, so as to ensure that the current and voltage are stable; the control circuit board and the lithium iron phosphate battery pack are further connected with a protection circuit board and a digital display circuit board for preventing short circuit of the circuits and displaying electric quantity; the protection circuit board is connected with a charging socket arranged on the exterior of the outer shell; and the digital display circuit is connected with an intelligent electric quantity alarm and then connected with an electric quantity display screen arranged on the exterior of the outer shell. Through the improvement, the improved mobile power source has the advantages of being long in service life, being safe and environment friendly, being convenient to master the electric quantity condition for prompting charging of the mobile power source, and preventing the occurrence of electric leakage accidents.
Owner:WUHU MITEC
Visual wireless detection system and method for multi-phase medium distribution of high-speed centrifuge
The invention discloses a visual wireless detection system and method for multi-phase medium distribution of a high-speed centrifuge. The visual wireless detection system comprises an automatic electrode switching module which is separately connected with a galvanostat, a data acquisition module and a microcomputer, wherein the galvanostat and the data acquisition module are separately connected with the microcomputer; the microcomputer is connected with a wireless data transmission module; and the wireless data transmission module sends demodulated voltage to a host in a wireless transmissionmanner. The invention also discloses the detection method using the visual wireless detection system. The visual wireless detection system and method provided by the invention solve the problems thatcentrifuge detection systems are unclear in images, great in size and inapplicable to industrial application in the prior art.
Owner:XIAN UNIV OF TECH
Constant flow device, water outlet terminal, bubbler and adapter
PendingCN114233908AHigh sensitivityConstant flow controlDomestic plumbingSpray nozzlesStream flowWater flow
The invention discloses a galvanostat, a water outlet terminal, a bubbler and an adapter, the galvanostat comprises a shell and an elastic ring, a water flow cavity, a water inlet and a water outlet are formed in the shell, the water inlet and the water outlet are communicated with the water flow cavity, and the elastic ring is arranged at the end, where the water outlet is located, of the water flow cavity; the elastic ring is located on the periphery of the water outlet. The device further comprises a movable part which is movably arranged in the water flow cavity, the movable part is provided with a plurality of extrusion parts which face the elastic ring and are distributed in the circumferential direction of the elastic ring at intervals, and when water enters the water inlet, the movable part is driven by water pressure to move towards the side where the elastic ring is located. Each extrusion part is close to or in contact with or extrudes the elastic ring, and a water passing gap communicated with the water flow cavity and the water outlet is formed between every two adjacent extrusion parts. The movable part is arranged, the area of the pressed face of the movable part is easily larger than that of the pressed face of the elastic ring, and therefore the high-sensitivity flow control valve is high in sensitivity and constant in flow control.
Owner:厦门市点水科技有限公司
Test device and test method for simulating steel bar corrosion in different environments
PendingCN113218851AAccurately grasp the key factors of corrosionWeather/light/corrosion resistanceCurrent sampleAcquisition apparatus
Owner:SOUTHEAST UNIV
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