94 results about "Potential electrical" patented technology

Embodiments of the present application provide a display panel and a display device. The display panel comprises a gate drive circuit. A pull-down capacitor is arranged in the gate drive circuit. At least one of a first node and a second node is electrically connected to a first plate of the pull-down capacitor. A second plate of the pull-down capacitor is electrically connected to a low potential power supply end. The pull-down capacitor is arranged between the at least one of the first node and the second node and the low potential power supply end. The pull-down capacitor can improve the ability to maintain the first node and / or the second node at a low potential. The ability to maintain other nodes and a signal output end at a low potential is improved. The pull-down speed is improved. The ability to maintain a low potential is improved. The channel width of a transistor in a pull-down maintenance module and an inverting module can be appropriately reduced due to the increased pull-down maintenance ability of the pull-down capacitor. As a result, the leakage current is reduced. The low leakage and the low potential maintenance ability of the gate drive circuit are balanced.

The invention provides a transformer area topology identification method and system based on a graph neural network, and relates to the technical field of power system power distribution networks, and the method comprises the steps: taking an HPLC concentrator as an edge module, carrying out the modeling of a transformer area into a graph structure, taking a transformer and an intelligent electric meter as the nodes of the graph structure, and taking the potential electrical connection between the nodes as the edge of the graph structure; the edge module collects multi-source data of each intelligent electric meter in a transformer area, and after the multi-source data is preprocessed, node feature vectors and edge feature matrixes are obtained according to the preprocessed multi-source data; the edge module learns node features and edge features by using a graph neural network based on the obtained node feature vectors and edge feature matrixes, and calculates the probability of electrical connection between any two nodes; and the edge module adopts a minimum spanning tree algorithm to generate a transformer area topological structure according with the set physical constraint according to the obtained result. According to the invention, high-precision automatic identification of the transformer area topology can be realized.

An apparatus, including: an antenna interface, comprising: a first transformer including a first transmission line coupled to a second transmission line, wherein the first transmission line includes first and second ends configured to couple to a first communication device and a reference potential electrode, respectively, and wherein the second transmission line includes first and second ends configured to couple to an antenna and a second communication device, respectively; and a second transformer including a third transmission line coupled to a fourth transmission line, wherein the third transmission line includes first and second ends configured to couple to the first communication device and the reference potential electrode, respectively, and wherein the fourth transmission line includes first and second ends configured to couple to the second communication device and a ballast load, respectively.

The battery pack structure comprises a mounting frame, a battery pack, a battery signal acquisition plate and at least two current collecting tabs. The mounting frame is used for being mounted on the inner side of the shell of an energy storage device, and a mounting space is formed between the mounting frame and the shell. The battery pack is arranged in the mounting space. The mounting frame is formed with at least two mounting portions. At least one current collecting tab is arranged on each mounting portion, and each current collecting tab contacts one same-potential electrode portion of the battery pack. The battery signal acquisition plate is mounted on the mounting frame, and the battery signal acquisition plate is in contact with and electrically connected with the at least two current collecting tabs, so that the electrical signals of each single battery can be acquired at one time through the battery signal acquisition plate. Therefore, the use of a wire harness in the energy storage device can be greatly reduced, and the influence of crosstalk interference on the acquisition accuracy of the battery signal acquisition plate is reduced.

According to an aspect of the present disclosure, the display device includes: a substrate including a display area and a non-display area adjacent to the display area, a plurality of light emitting diodes disposed in the display area and each including a cathode, a contact electrode disposed in the non-display area, and a plurality of insulating layers disposed on the substrate. At least one of the plurality of insulating layers includes a plurality of protrusions disposed between the substrate and the contact electrode, and the contact electrode is composed of a convex portion overlapping with the plurality of protrusions and a concave portion between the plurality of protrusions. Therefore, according to the present disclosure, the surface area of the contact electrode is increased due to the plurality of protrusions so that a resistance between the contact electrode and the cathode can be reduced.

A display device PN comprising a first substrate I IO; a plurality of top pads disposed on the first substrate TPAD; a second substrate 130 below the first substrate; a plurality of bottompads below the second substrate BPAD; a plurality of side lines SRL on side surfaces of the first and second substrates connecting the plurality of top pads and the plurality of bottompads. Each of the plurality of top and bottom pads includes: a plurality of first pads disposed in first pad areas TPA I / BPAI of the first edges EGI, and a plurality of second pads disposed in second pad areas TPA2 / BPA2 of the second edges EG2 of the first and second substrate. A high potential and low potential voltage is applied to the first and second plurality of padsrespectively. A plurality of ground pads TGNP disposed in first edges of the first and the second substrate are spaced apart with the plurality of first pads therebetween.

The utility model discloses a film laminating and pressing structure and a circuit board, and the film laminating and pressing structure comprises a substrate, the surface of which is provided with holes; the two stack-up structures are symmetrically arranged on the two sides of the substrate, and each stack-up structure comprises a barrier film, a three-in-one release film, a pressure buffering film and a heat conducting plate which are sequentially stacked on the substrate. According to the flexible-rigid combined board manufacturing method, by symmetrically arranging the stacked structures comprising the barrier films, the three-in-one release films, the pressure buffering films and the heat conduction plates on the two sides of the substrate, the common hole plugging problem during flexible-rigid combined board manufacturing in the traditional technology is solved, for example, the two release films are used as the barrier films and the pressure buffering films respectively, and the manufacturing cost is reduced. Wherein the barrier film is used for preventing a three-in-one release film material from being extruded into a hole in a substrate, and the pressure relieving film plays a role in relieving extrusion, so that the situation that an auxiliary material enters the hole due to uneven or overlarge pressure in the pressing process is effectively prevented, the cleanliness of the hole of the substrate is ensured, electrical faults possibly caused by the cleanliness are avoided, and the service life of the substrate is prolonged. And meanwhile, the appearance quality and the overall performance of the product are greatly improved.

The present application relates to a kind of island self-guarantee type base station energy storage device, including shell, positioning frame and energy storage piece;The shell is reserved with storage cavity, wherein storage cavity is used for the storage of energy storage piece, the opening position of shell near storage cavity is hinged with door plate by hinge, the side plate position of shell is installed with control panel, wherein control panel is used for overall control.This island self-guarantee type base station energy storage device moves by control panel operation motor drive lead screw and block, realize to energy storage piece maintenance disassembly, its energy storage piece is in the state without current, avoid the cumbersome step of needing to reach into the equipment inside to disconnect in traditional method, improve maintenance efficiency, and prevent the short circuit risk caused by direct pull terminal, to reduce potential electrical accident, by avoiding short circuit and improper operation, improve the healthy life of energy storage piece, reduce the damage probability in maintenance process.

The invention discloses a three-level power module which comprises a three-level power circuit, a positive electrode leading-out endpoint of a positive electrode layer of the three-level power circuit is arranged close to a first high-voltage outer side chip, a first midpoint electrode leading-out endpoint of a first midpoint potential electrode layer is arranged close to a first midpoint clamping chip, and a second midpoint electrode leading-out endpoint of a second midpoint potential electrode layer is arranged close to a second high-voltage outer side chip. A second midpoint electrode leading-out endpoint of the second midpoint potential electrode layer is arranged close to the second midpoint clamping chip, a negative electrode leading-out endpoint of the negative electrode layer is arranged close to the second high-voltage outer-side chip, and the upper bridge arm inner-side chip and the lower bridge arm inner-side chip are located in the center area of the substrate in the first direction. The second midpoint clamping chip and the first midpoint clamping chip are respectively located at the peripheral areas of the two sides of the substrate, and the second midpoint clamping chip, the first high-voltage outer side chip, the upper bridge arm inner side chip, the lower bridge arm inner side chip, the second high-voltage outer side chip and the first midpoint clamping chip in the three-level power circuit are arranged in sequence.

The application provides a micro-fluid driving circuit and a driving method thereof and a micro-fluid device. In the micro-fluid driving circuit, a first pass end of a first reset unit is connected to a low potential voltage source, a second pass end of the first reset unit, an output end of a charging unit and a control end of a driving unit are connected to a first connection node, a control end of the first reset unit is connected to a second scan signal line, the second scan signal line is a scan signal line of a previous row of a current row, a first pass end of a second reset unit is connected to the low potential voltage source, a second pass end of the second reset unit is used for connecting a driving electrode, and a control end of the second reset unit is connected to the first connection node. The second reset unit is used for being turned on in a state that the first connection node is at a low potential. Specifically, through the above setting, the control end of the driving unit and the driving circuit are reset when the micro-fluid driving circuit of the previous row works, and then the accuracy and stability of the operation of the driving electrode are improved.

This application provides a microfluidic driving circuit and its driving method, as well as a microfluidic device, including a charging unit, a driving unit, and a voltage boosting unit. The charging unit is connected to a data line and the control terminal of the driving unit. The voltage boosting unit includes a first energy storage subunit and a first reset subunit. A first end of the first energy storage subunit is connected to the control terminal of the driving unit at a first connection node, and a second end of the first energy storage subunit is connected to a second path terminal of the driving unit at a second connection node. The first reset subunit is connected to the second connection node and a low-potential voltage source, and its control terminal is connected to a second scan signal line. Specifically, by setting the voltage boosting unit, the potential of the first connection node can be increased during the writing of a high potential to the driving electrode, so that the driving unit can maintain its conduction state even if there is leakage at the first connection node, thereby improving the accuracy and stability of the microfluidic driving circuit.

A multi-pole connector from which noise is suppressed from leaking. The multi-pole connector to be mounted on a substrate having a mounting surface includes plural inner terminals, an outer terminal disposed so as to surround the plural inner terminals, an insulating member holding the outer terminal, and a ground conductor to be electrically connected to a ground potential of the substrate. The outer terminal has a gap exposing an outer side surface of the insulating member, and the ground conductor is disposed so as to overlap the gap formed in the outer terminal when viewed from the outer side surface side.

A constant potential electrolytic gas sensor 1 according to the present invention is characterized by comprising: a case including a case body 21; an electrode structure 3 provided in the case body 21 and including electrodes 31, 32, 33; lead wires 41, 42, 43 connected to surfaces of the electrodes 31, 32, 33; and external electrodes 51, 52, 53 extending from the outside of the case to the inside of the case, provided in the case body 21, and connected to the lead wires 41, 42, 43, wherein the external electrodes 51, 52, 53 are arranged so that connection points CP of the external electrodes 51, 52, 53 at which the lead wires 41, 42, 43 are connected are located at a height corresponding to the electrode structure 3, the case body 21 including guide sections 7 that guide the lead wires 41, 42, 43 along introduction paths from the outside of the case body 21 to the electrode structure 3 via the connection points CP of the external electrodes 51, 52, 53.

The invention provides a battery cell and electric equipment, the battery cell comprises a shell, an electrode assembly and a reference electrode, the shell is provided with a first output terminal, a first acquisition terminal and a reference acquisition terminal; the electrode assembly and the reference electrode are accommodated in the shell, the electrode assembly comprises a first pole piece, a first tab and a first auxiliary tab, the first tab and the first auxiliary tab are both connected to the first pole piece, the first tab is electrically connected with the first output terminal, the first auxiliary tab is electrically connected with the first acquisition terminal, the reference electrode is electrically connected with the reference acquisition terminal, and the reference acquisition terminal is electrically connected with the second output terminal. The acquisition instrument can be connected with the first acquisition terminal and the reference acquisition terminal to acquire potential, current, impedance and other information of the first pole piece, the information of the first pole piece can be truly reflected, the authenticity of a data source is improved, potential safety hazards of the battery cell are timely warned, and the safety performance of the battery cell is improved.

An arrangement (2) for power conversion and electric drive comprising a power converter (201) comprising three branches (202), an electric motor (203) comprising three open-end stator windings (204) each having a first end and a second end, and a power switch (205). The first ends of the stator windings (204) are connected to respective ones of the three branches (202) of the power converter (201), and the second ends of the stator windings (204) are connected together and have the same potential. The power switch (205) is used to selectively disconnect one of the second ends of the stator windings (204) from all other second ends to establish at most two different potentials. The established at most two different potentials of the second ends of the stator windings (204) can be connected to respective ones of the branches (206) of a grid interface (207) connected to the arrangement (2).

To provide a specific resistance measuring device and a banking evaluation method capable of preventing an electrode from being damaged.SOLUTION: This specific resistance measuring instrument includes an electrode-housing part 5 for housing potential electrodes and current electrodes, and a traveling body 3 having a plurality of rolling body 3b parts for supporting the electrode-housing part 5 and rolling on the banking S, and traveling along a traveling direction D1 part together with the electrode-housing part 5 in the banking S. The electrode-housing part 5 has a bottom part side 5b in contact with the banking S, and an inclined part side 5b extending obliquely upward from an end part on the D1 side in the advancing direction of the bottom part side 5c. The end portion of the inclined portion 5c on the traveling direction D1 side is located on the side opposite to the traveling direction D1 with respect to the end portions of the plurality of rolling elements 3b on the traveling direction D1 side.SELECTED DRAWING: Figure 5

An apparatus, including: an antenna interface, comprising: a first transformer including a first transmission line coupled to a second transmission line, wherein the first transmission line includes first and second ends configured to couple to a first communication device and a reference potential electrode, respectively, and wherein the second transmission line includes first and second ends configured to couple to an antenna and a second communication device, respectively; and a second transformer including a third transmission line coupled to a fourth transmission line, wherein the third transmission line includes first and second ends configured to couple to the first communication device and the reference potential electrode, respectively, and wherein the fourth transmission line includes first and second ends configured to couple to the second communication device and a ballast load, respectively.

There are provided a drive device and so on capable of improving the reliability. A drive device according to an embodiment of the present disclosure is a drive device configured to generate a drive signal to be applied to a liquid jet head having a plurality of nozzles, the drive device including a plurality of drive terminals which is arranged along a longitudinal direction of the drive device, and which is configured to individually output the drive signal for jetting liquid from the nozzles, and at least one dummy terminal configured to electrically be coupled to a predetermined constant potential. The plurality of drive terminals is divided into a plurality of drive terminal groups arranged along the longitudinal direction, and the dummy terminal is arranged at at least one of intervals between the plurality of drive terminal groups.

A display device is disclosed. The display device includes a first substrate; a plurality of wiring lines that are on the first substrate and are connected to a plurality of data pads and a plurality of gate pads; and one pair of electrostatic discharge circuits connected to the plurality of wiring lines, respectively, one of the one pair of electrostatic discharge circuits is electrically connected to a plurality of high potential power lines and the other is electrically connected to a plurality of low potential power lines. Accordingly, one pair of electrostatic discharge circuits is connected to each of the plurality of wiring lines to easily protect the plurality of wiring lines from the static electricity.

A power semiconductor device includes an active region and an edge termination region surrounding the active region. A field plate structure arranged around the active region includes at least one electrically conductive track electrically connected to a first potential of a first load terminal at a first joint and, at a second joint, electrically connected to a second potential of a second load terminal. The track forms at least n crossings, wherein n is greater 5, with a straight virtual line that extends from the active region towards an edge of the edge termination region. The difference in potential between adjacent two crossings increases in at least 50% of the length of the virtual line, and / or the difference in potential within, with respect to the active region, the first 20% of the length of virtual line is less than 10% of the difference in potential along the virtual line.

A semiconductor device includes a wiring substrate including a plurality of wiring layers, and a semiconductor chip including a first analog circuit. A power supply potential pattern capable of supplying a first power supply potential to the first analog circuit and a reference potential pattern capable of supplying a first reference potential to the first analog circuit are electrically connected with the first analog circuit. The power supply potential pattern is provided in a first wiring layer which is the nearest to a lower surface of the wiring substrate among the plurality of wiring layers. The reference potential pattern is provided in a second wiring layer which is the next nearest to the lower surface after the first wiring layer. The power supply potential pattern and the reference potential pattern extend in the same direction as each other while mutually overlapping with each other in transparent plan view.

An actuator device includes a wiring substrate; a metal substrate; a first electrode unit provided to the metal substrate; a piezoelectric drive body disposed on the first electrode unit; a second electrode unit disposed on a first main surface of the piezoelectric drive body; a piezoelectric detection body disposed on the second electrode unit; a third electrode unit disposed on a third main surface of the piezoelectric detection body; a connection unit; an input unit; and an output unit. The connection unit is configured to be electrically connected to a reference potential on an outside such that a potential of the second electrode unit becomes the reference potential. The input unit is configured to input a drive signal to the first electrode unit from the outside. The output unit is configured to output an output signal generated in the piezoelectric detection body, to the outside from the third electrode unit.

The invention relates to a power module for an inverter, the power module having a plurality of metal layers (2, 7, 8), comprising at least two DC layers (7, 8) and at least one AC layer (2), the DC layers (7, 8) each having a potential of a supply direct voltage (DC), namely a first potential or a second potential of the supply direct voltage (DC), and the at least one AC layer (2) having a potential of at least one output alternating voltage (AC) of the power module, and the power module comprising a metal base plate (1) for dissipating heat from the DC layers (7, 8) and from the the AC layer (2), wherein: at least one shielding layer (3) is arranged between the at least one AC layer (2) and the base plate (1); the at least one shielding layer (3) is electrically connected to a specific potential; the specific potential is electrically symmetrical and is thus galvanically isolated from the potentials of the supply direct voltage (DC) and from the at least one output alternating voltage (AC) of the power module, such that common-mode currents between the AC layer (2) and the base plate (1) are reduced.

To provide a liquid ejection head in which voltage drop can be prevented and variation is less likely to occur in the operation of an actuator section.SOLUTION: At least one of the high potential electrode and the low potential electrode of the actuator member 13 has a net-like part overlapping with the plurality of drive electrodes in the vertical direction, and an outer peripheral part connecting an outer peripheral end of the net-like part. Further, a plurality of contacts 81 electrically connected to the one are arranged at random intervals along the outer peripheral part of the one among a plurality of contacts for electrically connecting the actuators 13 and the COF14.SELECTED DRAWING: Figure 15

This invention relates to the field of switching power supply technology, specifically providing an isolated power supply circuit aimed at solving the problems of low integration, poor output consistency, and high cost and energy consumption in existing multi-channel isolated power supplies. To this end, the invention comprises: a power control and drive module, an isolation module, a rectification, filtering, and voltage regulation module, an anti-interference module, and a load module. The power control and drive module receives power, generates a drive voltage signal, and outputs the drive voltage signal to the isolation module, while simultaneously outputting a ground potential voltage signal to the anti-interference module. The isolation module achieves voltage signal isolation output through internal electromagnetic coupling, outputting the isolated voltage signal to the rectification and filtering module. The anti-interference module outputs the filtered, interference-free ground potential voltage signal to the rectification and filtering module. The rectification and filtering module performs rectification and filtering processes, outputting a stable voltage signal to the load module. This invention features high integration and high output consistency.

The application discloses an automatic monitoring device of a cathodic protection system suitable for a drum-shaped filter screen, which comprises a data transmission module and a sensor, the sensor is arranged on the drum-shaped filter screen and is used for collecting the cathodic protection potential, the protection current density and the residual chlorine concentration below the water surface of the drum-shaped filter screen, the sensor comprises a data acquisition unit, a data sending unit, a working electrode, a silver / silver chloride reference electrode, a residual chlorine measuring electrode and a first power supply battery, and the data transmission module comprises a data receiving unit, a data storage unit, a 4G-DTU data transmission unit and a second power supply battery. The automatic monitoring device and the evaluation method can collect the cathodic protection potential, the current density and the residual chlorine concentration and other parameters below the water surface of the drum-shaped filter screen in situ and on line, and utilize the Internet of Things technology to remotely and wirelessly transmit the data of the multi-point corrosion sensor to a background server, so that the health index of the cathodic protection system can be automatically evaluated in real time.

A system and related method for correcting for measurement glitches detected by a magnetic flowmeter assembly in determining fluid flow rate is provided. The magnetic flowmeter assembly includes a pair of electrodes that receive instantaneous first and second electrode potentials (voltage potentials) (Ue1 and Ue2) in order to determine an instantaneous induced voltage Ue across the fluid. A signal processor sends a digital signal of the induced voltage (voltage signal Ue) to a microprocessor that processes the signal data and calculates a corresponding instantaneous fluid velocity v. In addition, an instantaneous glitch detection variable Um is calculated based on the electrode potentials (Ue1 and Ue2) in order to detect the presence of measurement glitches in the electrode potentials, with the signal processor providing a digital signal of Um to the microprocessor. Thus, the flowmeter assembly is able to correct for measurement glitches by manipulating the instantaneous voltage signal Ue such that the calculated and displayed fluid flow rate is not skewed by the measurement glitches.

The invention provides a power supply control circuit and system, in the circuit, a power supply input end is used for providing a first power supply voltage; the driving control end is used for controlling on or off of the first switching tube and the second switching tube, and when the first switching tube and / or the second switching tube are / is controlled to be switched off, charges of parasitic capacitance of a grid electrode of the first switching tube and / or the second switching tube are discharged through the gate electrode discharge module; and the power supply demand end is used for receiving a second power supply voltage from the power supply input end after the first switch tube and the second switch tube are switched on. In the circuit, a first power supply voltage provided by a power supply input end can be a stable voltage, a high-potential voltage, a low-potential voltage or a floating voltage, the circuit can be suitable for various different application scenarios, and a gate discharge module is arranged in a driving control end, so that the driving control end is more stable. Therefore, the charges of the parasitic capacitors of the grid electrodes of the first switch tube and the second switch tube can be quickly discharged, so that the response speed of the switch tubes can be improved.

The present application provides a high-frequency device and a multiplexer capable of suppressing generation of unnecessary loss in a high-frequency signal. The high-frequency device includes a substrate having a first surface and a second surface, and a chip component mounted to the first surface of the substrate. The substrate has a signal electrode, a signal line, a lead-out line, a reference potential electrode, and an inductor. The signal electrode is provided on the second surface and is connected to a functional element of the chip component via the signal line. The lead-out line has one end and the other end. One end of the inductor is connected to the other end of the lead-out line, and the other end of the inductor is connected to the reference potential electrode. The one end of the lead-out line is connected to the signal electrode or the signal line at a position closer to the second surface than the one end of the inductor.