133 results about "Current sheet" patented technology

The a cathode-arc source of metal plasma with filtration, used, in particular, for deposition of DLC, utilizes the effect of fast ions reflection from the Hall stratum in a transversal arched magnetic field to filtrate vacuum arc plasma arc from contaminating macroparticles and vapor. Various embodiments for producing maximal plasma flux at the source outlet, in particular, a pulse source with more the one cathode units for deposition of coating inside pipes / cavities, for deposition of coating in a stationary / quasi-stationary condition are offered. The cathode is made of a consumable material and is exposed to poles of magnets on both ends of cathode for creating a transversal magnetic field of an arched configuration in a discharge gap between the cathode and the anode. The anode geometry adequate to the mechanism of the arc current passage through a transversal magnetic field is offered. To avoid longitudinal and transverse short circuits of the current layer, an installation of non-conducting surfaces at ends or sectioned shields under a floating potential at the cathode sides is provided. The method of creating the Hall stratum in said transversal magnetic field of arched configuration is offered.

A nitride based semiconductor photo-luminescent device has an active layer having a quantum well structure. The active layer has both a high dislocation density region and a low dislocation density region that is lower in dislocation density than the high dislocation density region, wherein the low dislocation density region includes a current injection region into which a current is injected, and the active layer is less than 1×1018 cm−3 in impurity concentration.

Disclosed is a gas sensor comprising a first internal space for making communication with the external space via a first diffusion rate-determining section, a first electrochemical pumping cell for controlling the oxygen concentration in the atmosphere in the first internal space to have a predetermined value, a second internal space for making communication with the first internal space via a second diffusion rate-determining section, a second electrochemical pumping cell for finely adjusting the oxygen concentration in the atmosphere in the second internal space to have a predetermined value, a third internal space for making communication with the second internal space via a third diffusion rate-determining section, a third electrochemical pumping cell for pumping out oxygen produced by reduction or decomposition of a component having bound oxygen in the measurement gas in the third internal space, and an ammeter Ip for detecting a pumping current which is allowed to flow in accordance with the pumping operation effected by the third electrochemical pumping cell. Accordingly, it is possible to avoid interference exerted on the sensitivity for NO by the change in oxygen concentration in exhaust gas, and improve the measurement accuracy for the measurement gas component.

The present invention describes a new electrochemical biosensor comprising (i) a biocatalyst producing a pH change when interacting with the analyte to be determined and (ii) a compound exhibiting different redox properties both in its protonated and non-protonated forms (pH-sensitive redox compound). The elements described above are integrated in a biosensor system composed of a working electrode and a reference electrode connected to an ammeter. When the analyte is present, the system produces a current change that is proportional to the concentration of the analyte. The biosensors described herein can be used in the accurate detection of a wide range of analytes. They can be used in diagnostics, industrial processes, food and feed quality control, biotechnology, pharmaceutical industry, environmental monitoring and so on.

The invention discloses a solving method electromagnetic design used for a surface-mounted permanent magnet motor. The solving method comprises the following steps: (1) based on an improved subdomainmethod, establishing a vector magnetic potential expression of a permanent magnet, an air gap and a stator slot, and obtaining current magnetic field distribution of three subdomains according to thevector magnetic potential expression, wherein an equivalent current sheet is added into the stator slot as a boundary condition, the vector magnetic potential expression of the stator slot is relatedto the current density of the equivalent current sheet; (2) according to the obtained current magnetic field distribution, using a magnetic circuit method to solve and obtain the magnetic voltage dropof each part of a stator core, and converting the magnetic voltage drop into the current density of the equivalent current sheet inside the stator slot; (3) through mutual iteration of the improved subdomain method and the magnetic circuit method, solving the magnetic field distribution of the three subdomains; and (4) calculating permanent magnet motor magnetic flux linkage, counter electromotive force and cogging torque. By using the solving method, the magnetic field distribution of the motor and the electromagnetic performance of the motor under the condition that a saturation effect is considered can be calculated accurately, and optimal opinions are provided for motor design.

The invention includes frame, face shield assembled inside the frame, condensation reflector and solar panels. The technical key points are: the condensation reflector is composed of basal body of smoothing concave curved surface with section in shape of composite parabola and reflective thin film; solar panels are sealed at jaw opening at bottom of basal body; array distributed each condensation reflector is arranged in the frame closely; through lead wire and inverter, each solar panel is connected to controller and power supply system. Features are: reasonable structural design, no need of sun tracker, increased generating capacity of solar battery per unit area, flexible and reliable assembly, and panel shape close to specification of current sheet material. Being possible popularized in large area in low cost, the invention is in favor of environmental protection and energy saving.

Sheet resistance, junction leakage and contact conductivity of a semiconductor layer, associated with an ultra-shallow junction layer or metal film are measured by contacting the surface with a plurality of probes. The probes can be used, in conjunction with a four-point probe system, to determine sheet resistivity. Junction leakage through an ultra-shallow junction is determined by establishing a reverse bias across the junction set at a predetermined voltage value, measuring through a first probe a total junction current conduction value, measuring through second, third, and fourth probes a plurality of voltage values. The junction leakage value is then directly computed based on the sheet resistivity value, reverse bias potential, wafer radius, and the measured voltage values. Contact conductivity between a metal film and semiconductor layer can be similarly directly computed.

A phased array antenna(10) includes a current sheet array (20) on a substrate (23), at least one dielectric layer (24) between the current sheet array and a ground plane (30), and at least one conductive plane (25) adjacent to the substrate for providing additional coupling between adjacent dipole antenna elements of the current sheet array.

Sheet resistance, junction leakage and contact conductivity of a semiconductor layer, associated with an ultra-shallow junction layer or metal film are measured by contacting the surface with a plurality of probes. The probes can be used, in conjunction with a four-point probe system, to determine sheet resistivity. Junction leakage through an ultra-shallow junction is determined by establishing a reverse bias across the junction set at a predetermined voltage value, measuring through a first probe a total junction current conduction value, measuring through second, third, and fourth probes a plurality of voltage values. The junction leakage value is then directly computed based on the sheet resistivity value, reverse bias potential, wafer radius, and the measured voltage values. Contact conductivity between a metal film and semiconductor layer can be similarly directly computed.

A digital pen input system for allowing a user to write or draw by interacting with sheets of paper and allowing electronic tracing of pen movements for digital storage or display, the input device comprising a holder for sheets of paper, and a unit for detecting exchange of a current sheet, the system comprising: an autonomous page changing detector for autonomously detecting an action being a direct part of the exchange of a current sheet; and a data-stream insertion unit for inserting a new page indicator into a data stream emerging from the pen movements, at a location in the stream indicated by a time of the detecting, the new page indicator being a display instruction to separately display pen movements located before and after the new page indicator as separate pages.

The invention relates to a grain moisture detector, belonging to the technical field of electronic detection. The grain moisture detector consists of a power circuit 1, a detection unit 2, a detection device 4 connected with the input of the detection unit 2, and a display unit 3 connected with the output of the detection unit 2, and is characterized in that the detection device 4 is a box-typed parallel-plate capacitor, and copper plates or aluminum plates are taken as two parallel plates of the capacitor and respectively positioned inside two opposite surfaces of a portable box made of insulation materials; and the detection device 4 is the box-typed parallel-plate capacitor, the copper plates or aluminum plates with the thickness being 3 to 4mm are taken as the two parallel plates of the capacitor, and the two sides and the bottom surface of the capacitor are made of the insulation materials. A parallel-plate capacitor probe in the grain moisture detector has simple operation, and is firm and durable. The degree of humidity is displayed by the quantity of lights emitted by a light-emitting diode, thus being intuitive and clear; or the degree of humidity is displayed by using a voltmeter, an ammeter or liquid crystal, thus being intuitive and precise.

The invention belongs to the field of radar technology and communication technology, in particular to a tightly coupled antenna array with wide bandwidth, wide angle and low profile. The antenna arraycomprises a supporting member composed of a supporting plate, a supporting plate frame, a reflecting plate and a feeding joint, and an antenna line composed of a Wilkinson power divider, a feeding balun, a radiation current sheet and a frequency selection surface; The antenna line is laminated by two dielectric copper clad plates, and are divided into four layers: circuit structure layers of theupper and lower layers of an upper layer dielectric plate and circuit structure layers of the upper and lower layers of a lower layer dielectric plate; the first and fourth layers are in a symmetricalradiation structure, the second layer is an empty plate, and the third layer is provided with the power divider and balun. The first and fourth layers are electrically connected through conductive vias to provide a closed environment for the third layer and suppress energy leakage. The radiation current sheet is symmetrically distributed, which can reduce the impedance at the point where the balun is coupled with the current sheet. Frequency selective surface is located on the third layer, which can be used to replace the impedance matching dielectric layer on the current sheet, so that the antenna can be fabricated and installed more easily.

The invention discloses a test method and tester for multi-point grounding of a common loop. The invention has the following beneficial effects: connecting a constant-current source and an alternating current ammeter in parallel between an N wire to be tested and a ground point and using a clip-on ammeter to measure the branch current of the N wire to be tested and the ground point to change the current value of the constant-current source and comparing the current of the alternating current ammeter I1 with the current of the clip-on ammeter I2 to judge whether the N wire to be tested undergoes multi-point grounding. The method and the tester can directly detect whether the common loop undergoes multi-point grounding without exiting from the original ground point, and are simple and convenient to operate and friendly and intuitive in interface. The method and the tester can be widely applied to power field operation and detection.

A magnetic core for a current transformer, and a current transformer and a watt hour meter used thereof, which is preferred the detection of a alternate current with a large asymmetrical waveform and a alternate current which a direct current is superimposed are realized. A magnetic core for a current transformer comprising the composition represented by the general formula: Fe100-x-a-y-cMxCuaM′yX′c (atomic %), wherein M is at least one element selected from Co and Ni, M′ is at least one element selected from V, Ti, Zr, Nb, Mo, Hf, Ta, X′ is at least one element selected from Si and B, and x, a, y, and c meets the composition of 3≦x≦50, 0.1≦a≦3, 1≦y≦10, 2≦c≦30, and also 7≦y+c≦30, and an alloy comprising a crystal grain consisting of at least a part or all of the composition with a mean particle size of less than or equal to 50 nm.

A liquid pH value detection device comprises a detection sensor and an ammeter, wherein the detection sensor comprises an anode prepared from a metal with weak metal activity and a cathode prepared from a metal with strong metal activity, the anode of the detection sensor, the ammeter and the cathode of the detection sensor form a series circuit, the anode and cathode of the detection sensor contact with the liquid to be detected and the corresponding pH value of the liquid is shown on the index plate of the ammeter. The liquid pH value detection device has simple structure, small volume and fast measurement, has no power supply and can measure or judge the pH value of the liquid quantitatively and qualitatively at any time.

The invention discloses a coiled continuous sheet cutting method based on a CCD (charge coupled device) image recognition die-cutting machine. Coordinates of a first identifier and second identifier are quickly recognized by making full use of cooperation of a first CCD image recognition module and a second CCD image recognition module; the coordinates are compared with preset coordinate, and analyzing is performed to obtain deviation data of current sheets; calculating is performed according to the deviation data of the current sheets to obtain alignment parameters; an alignment module can quickly acquire the alignment parameters and adjust positions of the current sheets according to the alignment parameters, and then, the current sheets may reach a die-cutting position to take cutting;a control module corrects single pull length according to the alignment parameters and controls a drum drawing module to draw each coiled continuous sheet. The die-cutting machine herein can perform aligning quickly to finish single cutting at the premise of precision guaranteed; cutting speed of continuous cutting can be further increased.

A pressure gradient sensor for seismic and other applications utilizing the principle of diamagnetic drift. The sensor comprises at least one transducer, each transducer made of or containing a medium having at least one species of mobile charged particles such as electrons or holes that exhibit diamagnetic drift under a pressure gradient. A magnet and a pair of electrodes are installed in each transducer. Diamagnetic drift current collected by the electrodes can be measured by an ammeter or similar device, and formulas and methods are disclosed to determine the pressure gradient from the measured current.

The invention discloses a reed type fixture. The reed type fixture comprises a voltage sheet, an insulating sheet, a plurality of current sheets and a spring fixing injection molded part, wherein a front part of the voltage sheet is overturned downwards to form a first edgefold; saw teeth are distributed on a bottom surface of the voltage sheet; front parts of the current sheets are overturned downwards to form a second edgefold; the height of the first edgefold is consistent with the height of the second edgefold; the front parts of the current sheets are partitioned into left and right parts through an axial groove; the voltage sheet, the insulating sheet and the current sheets are overlapped in sequence layer after layer from top to bottom to form a layered structure; the spring fixing injection molded part comprises an upper injection molded part and a lower injection molded part; the upper injection molded part has a door type structure; a side face of the upper injection molded part is provided with a plurality of second through holes and a cylindrical pin; the upper injection molded part is fixedly connected with the lower injection molded part; and a back part of the layered structure is inserted into a clamping groove enclosed by the upper injection molded part and the lower injection molded part, and fixedly connected through a screw. The reed type fixture has the beneficial effects of convenience in replacement operation, high crimping reliability and low contact resistance, and is suitable for charging and discharging various soft package polymer power batteries.

The invention discloses a method for establishing multi-channel point-to-point connection, which comprises the following steps that: a node sends a join application to a server; the server sends a current data sheet to the node and records the node into the data sheet; and after the node receives the current data sheet, the node respectively establishes the point-to-point connection with nodes recorded in the current data sheet. The invention also discloses a device for establishing the multi-channel point-to-point connection and a client device. The invention can make status of various nodes in a network equal, and the power off or line break and the like of individual nodes cannot influence the effect and success ratio of a whole conference. In addition, the embodiment of the invention can realize audio and video conferences, and has wide application range.

The present invention provides a display capability tester of magnetic powder or a magnetic suspension. The tester comprises: a display apparatus, wherein the display apparatus comprises a display test block, a center conductor for providing a magnetic field for the display test block, and a connection electrode for electrifying the center conductor, and the display test block is provided with an artificial defect; a magnetization power supply, wherein the magnetization power supply is connected to the connection electrode, and provides an adjustable magnetization current for the connection electrode; a demagnetization apparatus, wherein the demagnetization apparatus comprises a demagnetizer connected to the connection electrode, and is provided for demagnetizing the display test block; a control apparatus, wherein the control apparatus is provided for electrically connecting the magnetization power supply and the demagnetization apparatus, and comprises a magnetization switch for opening the magnetization power supply, a demagnetization switch for opening the demagnetization apparatus, and a current adjustment mechanism for adjusting a magnetization current of the magnetization power supply; and an indication apparatus, wherein the indication apparatus comprises an ammeter for indicating a magnetization current value of the magnetization power supply. The display capability tester of the present invention mainly has the following advantages that: by providing the standard display test block and the adjustable magnetization current, a test platform with characteristics of convenience, accuracy and capability of reference comparison is provided for display capability of the magnetic powder or the magnetic suspension.

An antenna device is for a mobile unit to transmit / receive signals, and the mobile unit comprises a printed circuit board which is mounted with a signal processing circuit for processing the signals, the antenna device comprises an antenna body, a metal feeding line, and a ground metal layer. The antenna body is mounted on one side of the mobile unit for transmitting / receiving signals. The metal feeding line made on the upper surface of the printed circuit board, one end of the metal feeding line is connected to the antenna body and the other end of the metal feeding line is in connection with the signal processing circuit from the center part of an edge of the printed circuit board. The ground metal layer is formed on the lower surface of the printed circuit board. When the mobile unit is in transmission, as a result of the metal feeding line is fed from the center part of the edge of the printed circuit board to the signal processing circuit that the well-spread currents are generated upon the surface of the ground metal layer and the antenna device has omnidirectional antenna radiation pattern.

The invention discloses a corrosion rate measuring device and measuring method, and relates to the technical field of electrical equipment corrosion, and the technical problem that in the prior art, the corrosion rate of a metal component cannot be measured in real time is solved.The corrosion rate measuring device comprises at least one measuring probe and at least one ampere meter, and each measuring probe comprises a base body, an insulating layer and a metal layer, wherein the insulating layer is located on the base body, the metal layer is located on the insulating layer, the area of the insulating layer and the area of the metal layer are both smaller than that of the base body, a negative terminal of each ampere meter is connected with the corresponding base body, and a positive terminal of each ampere meter is connected with the corresponding metal layer; each base body is made of active metal or active metal alloy, and the metal layers are inert metal layers.The corrosion rate measuring device and measuring method are used for measuring the corrosion rate of the metal component in real time.

The invention provides a preparation device of a flexible electrode. The preparation device comprises a mixing container, a deposition container, a current detector, a first heater and / or a second heater, wherein a flow pipeline and a valve for closing or opening an inlet end of the pipeline are arranged at the bottom end of the mixing container; a liquid metal and an elastomer are stirred and mixed evenly in the mixing container; a probe detects a mixture until current passes through an ampere meter; and the valve of the pipeline is opened and the mixture flows to the deposition container through the pipeline under the pressure effect and is molded into a block electrode. Compared with the prior art, the preparation device is simple in structure, the electrode can be produced on a large scale and the electrode has the advantages of high deformability, stable resistance and the like.

An etching method for a silicon substrate, which can easily smooth the etching surface of the (110)-oriented silicon, is disclosed. A container is filled with KOH solution. In the KOH solution is immersed a (110)-oriented silicon wafer having a PN junction and is also disposed a platinum electrode plate to face the silicon wafer. To between a platinum electrode of the silicon wafer and the platinum electrode plate are connected a constant voltage power source, an ammeter and a contact in series. A controller starts etching from one surface on which the PN junction is formed, and terminates voltage application when the specified time lapses after the formation of an anodic oxide film is equilibrated with the etching of the anodic oxide film on the etching surface on the PN junction part. In this case, the controller detects flowing current through the ammeter, and the point of time when the equilibrium state is obtained is the point of inflection of the detected current to the constant current after the peak thereof.

The invention discloses an aluminum alloy surface treatment method of microarc oxidation combined with pulse electrodeposition hole sealing. The treatment method includes the following steps that (1),pretreatment; (2), micro-arc oxidation treatment; (3), cleaning treatment before hole sealing; (4), pulse electrodeposition hole sealing treatment and (5), test specimen post treatment. A pulse electrodeposition hole sealing device includes an electrolytic bath arranged on a base plate. The electrolytic bath contains a hole sealing liquid. A temperature sensor, an aluminum electrode, and the testspecimen are all soaked in the hole sealing liquid. The aluminum electrode is connected with the anode of a pulse power supply through a communication line, and an amperemeter is arranged between thealuminum electrode and the pulse power supply. The test specimen is connected with the cathode of the pulse power supply. According to the electrolyte, raw materials are easy to get, environmental pollution is small. The ceramic layer obtained is compact and smooth, the porosity rate is low, the decay resistance is prominent, and the binding force between the ceramic layer and a base body is good. The novel pulse electrodeposition hole sealing method is good in adhesiveness and obvious in hole sealing effect.

The invention provides a system for providing output current to one or more light emitting diodes. The system comprises a switch control assembly which is configured to output control signals and controls on and off of a system power switch by the control signals according to output current characterization signals, demagnetization characterization signals and first and second reference signals, wherein the characterization of output current characterization signals flows through output current of the one or more light emitting diodes, the characterization of the demagnetization characterization signals is the demagnetization condition of an inductor connected with the one or more light emitting diodes, the system power switch is connected to the one or more light emitting diodes by the inductor, and the one or more light emitting diodes and a capacitor are connected between the inductor and the ground in parallel. According to the system, the total current distortion can be reduced to the minimum while the odd harmonic meets the industrial standard.

The invention provides a crystal cutting device and method, and relates to the technical field of material cutting. The crystal cutting device is characterized in that a worktable, a cutting mechanism, a crystal adjusting mechanism and a crystal orientation detecting mechanism are integrated; the crystal adjusting mechanism comprises a rotating mechanism and a pitching mechanism, the crystal orientation detecting mechanism comprises a moving table, a rotating device, a detecting device and an ampere meter, and the crystal cutting method comprises the steps that the crystal to be cut is fixed to a material disc; through the crystal adjusting mechanism, the space posture of the crystal to be cut is adjusted in the rotating orientation, and the expression of the ampere meter achieves peak value; a detecting device of the crystal orientation detecting mechanism is rotated by 90 degrees, through the crystal adjusting mechanism, the space posture of the crystal to be cut is adjusted in the pitching direction, and expression of the ampere meter achieves peak value; and the crystal adjusting mechanism is locked, and the crystal to be cut is cut. According to the crystal cutting device andmethod, the cut crystal is high in crystal orientation precision, the surface quality is good, and cutting efficiency is high.

The invention relates to an apparatus and a method for measuring the secondary electron yield of a metal material within a low energy range. The apparatus comprises a collection pole, two ammeters andan electron gun, wherein the collection pole has two layer and has a downward opening, the top portion of the structure of the collection pole is provided with a reservation hole, the upper surface of a sample is placed in the collection pole and is positioned just below the reservation hole, the electron gun shoots incident electrons onto the sample through the reservation hole, one ammeter as the ammeter A is connected between the sample and the ground, the other ammeter as the ammeter B is connected between the inner surface of the collection pole and the ground, and the outer surface of the collection pole is grounded.

The invention discloses a balanced banknote discharging algorithm, which comprises the steps of: acquiring a current sheet number in each banknote box; ranking the banknote boxes; assigning serial numbers to the ranked banknote boxes; forming a two-dimensional array by regarding difference values as elements; forming a one-dimensional array by regarding a total difference obtained by each row as elements; acquiring a required total sheet number of banknote allocation; determining a standard element; acquiring a residual value by subtracting a numerical value of the standard element from the total sheet number of banknote allocation, and calculating quotients and remainders of the residual value; allocating a banknote allocation result to each banknote box; calculating to obtain difference values of the standard element through addition and allocating the difference values to the banknote boxes with the serial numbers from 1 to m, allocating the quotients to each banknote box, and allocating the remainders to the banknote boxes one by one in a descending order. The balanced banknote discharging algorithm has the advantage of being capable of realizing the effect of discharging the banknotes of the same denomination in a most balanced state regardless of the amount of money the user deposits and which one banknote box the money is stored in. In macroscopic statistics, the working frequencies of the banknote boxes tend to be the same, thereby avoiding the situation that the entire teller machine cannot operate normally due to excessive operation of one banknote box.