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40results about How to "Reduce ground impedance" patented technology
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Thin film transistor liquid crystal display
InactiveCN105116599AIncrease contact areaReduce ground impedanceNon-linear opticsLiquid-crystal displayGround impedance
The invention provides a thin film transistor liquid crystal display which comprises a first polarizer, an array substrate, a colored filter substrate, a second polarizer and conductive glue. The array substrate is located above the first polarizer, the colored filter substrate is opposite to the array substrate, a liquid crystal layer is clamped between the colored filter substrate and the array substrate, the second polarizer is located above the colored filter substrate, the side edge of the second polarizer is cut into a special shape, and the conductive glue is arranged between the second polarizer and the colored filter substrate in a coating mode. The side edge of the second polarizer, the side edge of the conductive glue and the side edge of the colored filter substrate further comprise silver glue which is electrically coupled with the second polarizer. Compared with the prior art, the side edge of the second polarizer is cut into the special shape such as a corrugated shape, so that the contact area of the conductive silver glue and the second polarizer is increased along with increasing of the length of a curve on the side edge of the second polarizer, smaller grounded impedance is obtained, and a more reliable electrostatic discharge path is formed.
Owner:AU OPTRONICS CORP
Lightning arrester, structure pillar having lightning arresting function, and reduction method of lightning surge voltage
ActiveCN101513133AReduce voltage dropCurb riseInstallation of lighting conductorsEmergency protective arrangements for limiting excess voltage/currentElectrical conductorLightning strike
A lightning arrestor (1) for flowing the thunder surge current due to lightning strike (7) to the ground comprises a steel pipe (3), a conductor (4) coaxially disposed in the steel pipe (3), an a filler (10) placed between the steel pipe (3) and the conductor (4) and having a conductivity. With this, the thunder surge current flowing through the lightning arrestor (1) is divided. The low-frequency component flows through the conductor (4), and the high-frequency component flows through the steel pipe (3) outside the conductor (4) and the filler (10).
Owner:NIPPON STEEL CORP
Printed circuit board
InactiveCN103167721AReduce manufacturing costImprove anti-electromagnetic interference performancePrinted circuit groundingMagnetic/electric field screeningElectromagnetic interferenceEngineering
The invention provides a printed circuit board. The printed circuit board comprises a board body and bolts, wherein each of the bolts comprises a cap part and a rod part, the board body comprises a first signal layer, a grounding layer, a power source layer and a second signal layer, the first signal layer, the grounding layer, the power source layer and the second signal layer are sequentially arranged in a stack mode, a through hole is formed in the board body, the through hole comprises a locking hole and a penetrating hole, the locking hole is communicated from the first signal layer to the grounding layer, the penetrating hole is communicated from the second signal layer to the grounding layer and communicated with the locking hole, the cap part is accommodated in the locking part and contacted with the grounding layer, and the rod part is arranged in the penetrating hole in a penetrating mode. According to the printed circuit board, manufacture cost is low, and the ability of anti-electromagnetic interference of the printed circuit board can be effectively improved.
Owner:HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
Wind turbine fault detection circuit and method
ActiveUS20140112032A1Accurate measurementAccurate and reliable identificationEngine fuctionsMachines/enginesTurbineComparator
A wind turbine fault detection circuit and method is disclosed herein. In a described embodiment, the wind turbine fault detection circuit comprises a magnetometer in the form of a hall-effect sensor coupled between a power converter and a ground element of the power converter and configured to measure a ground current from the power converter to obtain a real ground current Ig; and a comparator configured to determine presence of a fault based on the real ground current.
Owner:VESTAS WIND SYST AS
Heat-conducting bonding pad and package structure of QFP chip with heat-conducting bonding pad
InactiveCN105552048AReduce areaReduce in quantitySemiconductor/solid-state device detailsSolid-state devicesElectrical conductorHeat conducting
The invention provides a heat-conducting bonding pad and a package structure of a QFP chip with the heat-conducting bonding pad. The heat-conducting bonding pad comprises a bonding pad region and a peripheral region, wherein the bonding pad region is provided with a plurality of bonding pad parts which are arranged in an array; and gaps are formed among the bonding pad parts. The bonding pad parts of the heat-conducting bonding pad are arranged in the array and are isolated from one another, and the area of the bonding pad parts is greatly reduced, so that, on one hand, the escape path of a gas generated by soldering flux pyrolysis in a solder paste in a high-temperature welding process is shortened; and on the other hand, the gaps between the adjacent bonding pad parts provide channels for escape of the gas; the gas can timely escape; the area and the quantity of bubbles are effectively reduced; the condition that the chip has enough heat radiating area is ensured; and the heat radiating effect is improved. Meanwhile, the effective area of a conductor formed by the bonding pad is increased, so that the grounding impedance of the chip is reduced; and the reliability of the chip is improved. The welding effect of the heat-conducting bonding pad is improved; and excessive floating of the chip is avoided, so that the welding reliability of peripheral pins is improved.
Owner:ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
Power transmission line tower grounding design method and device
PendingCN112069608AObtained the counterattack flash rate across the boardReduce ground impedanceGeometric CADData processing applicationsSoil scienceAgricultural engineering
The invention discloses a power transmission line tower grounding design method and device. The method comprises the steps: determining a control target of the counterattack flashover rate of a powertransmission line and grounding impedance limit values of different soil resistivity gears; dividing the power transmission line into a plurality of sections along the power transmission line according to the soil resistivity grades; determining the counterattack flashover rate of each section according to the terrain category and the lightning day parameters in each section along the power transmission line; according to the control target of the counterattack flashover rate of the power transmission line, adjusting the whole line counterattack flashover rate of the power transmission line byadjusting the grounding impedance limit values of different soil resistivity levels; taking the adjusted grounding impedance limit values of different soil resistivity levels as control values of tower grounding impedance of each section of the power transmission line; and according to the control value of the tower grounding impedance, designing the structure and the size of the power transmission line tower grounding device. The problems that in the prior art, the grounding impedance is blindly pursued to be reduced, and economy is poor are solved.
Owner:CHINA ELECTRIC POWER RES INST +2
Novel fixing device and assembling method for high-power radio frequency power amplifiers
ActiveCN102625625ALow costSimple structureResilient/clamping meansCooling/ventilation/heating modificationsSurface layerAudio power amplifier
The invention discloses a novel fixing device and an assembling method for high-power radio frequency power amplifiers. The fixing device comprises a radiating base, a PCB (printed circuit board) board and a U-shaped piece. The PCB board is arranged tightly on the upper surface layer of the radiating base and provided with a center hole and a pair of fixing holes for connecting, a group of welding pads are arranged along the surrounding edge of the center hole; the central part of the U-shaped piece is an arc-shaped groove body, the upper two sides extend outward to form lugs respectively, each lug is provided with a fixing hole and is connected with the PCB board through an adjusting protection retaining part and a screw which penetrates through the fixing hole;a high-power radio frequency power amplifier is pressed on the radiating base by the central arc-shaped groove body of the U-shaped piece through downward pressure; and the U-shaped piece, the PCB board and the radiating base are connected by the screws or bolts which penetrate through the fixing holes on the lugs. By the assembling method, the high-power radio frequency power amplifiers can be assembled with low cost, good grounding and radiating of the radio frequency amplifiers can be guaranteed, performance consistency of the high-power radio frequency power amplifiers is improved, and production and assembly of the high-power radio frequency power amplifiers are facilitated.
Owner:北京市万格数码通讯科技有限公司
Device and method for fixing power amplifier
ActiveCN103607843AGuaranteed reliabilityLow reliabilityPrinted circuit non-printed electric components associationCooling/ventilation/heating modificationsElectricityManufacturing technology
The invention discloses a device and a method for fixing a power amplifier. The fixing device of the power amplifier comprises a fixing block, a PCB (Printed Circuit Board) and a radiator, wherein the fixing block comprises a body and a convex portion which is convexly arranged at the body, a top end of the convex portion is welded with the power amplifier, the PCB comprises a through hole in matching with the convex portion and a connection portion which is arranged at periphery of the through hole and is in grounding connection, the convex portion is inserted into the through hole, thickness of the PCB is equal to thickness of the convex portion, the body is in electrical connection with the connection portion, the fixing block is in grounding connection, and the radiator is connected with a bottom face of the body far from a top end of the convex portion and the PCB. According to the device and the method, manufacturing technology is simpler, an automation degree is higher, work reliability of the power amplifier is guaranteed while integral production cost reduction and product cost performance improvement are realized.
Owner:SHENZHEN EXCERA TECH
Steel sheet tin filling grounding process
InactiveCN108135080AReduce ground impedanceEliminates bonding processPrinted circuit groundingCross-talk/noise/interference reductionFlexible circuitsGround impedance
The invention discloses a steel sheet tin filling grounding process, comprising a steel sheet, a flexible circuit board and an electronic component arranged on the circuit board. The electronic component is located on the front of the circuit board, and the steel sheet is located on the back of the circuit board. The circuit board is provided with a through hole in the position corresponding to the electronic component. One end of the through hole is communicated with the electronic component, and the other end of the through hole is communicated with the steel sheet. After tin is poured intothe through hole, the electronic component is connected with the steel sheet. After tin is solidified on the steel sheet, the electronic component and the steel sheet are fixedly combined, a tin layeris formed between the circuit board and the steel sheet, and the steel sheet is tightly combined with the circuit board through the tin layer. Through the process, an FPC-tin layer-steel sheet structure is obtained. The grounding impedance of the FPC and the steel sheet can be greatly reduced, and the static electricity and the overall performance can be significantly improved. Moreover, a conductive adhesive bonding process is avoided, and the cost is reduced.
Owner:蚌埠华特科技有限公司
Display device
ActiveCN105873342AReduce ground impedanceIncreased resistance to lateral thrust stress strengthElectrostatic chargesIdentification meansElectrostatic dischargeElectricity
The invention provides a display device, which comprises a display panel, a circuit board and a conducting element, wherein the circuit board is arranged adjacently to the display panel and is electrically connected with the display panel; the circuit board comprises at least one conducting pattern which is arranged in a grounding region; the conducting pattern comprises a plurality of conducting parts which are arranged at intervals; the plurality of conducting parts are arranged along the first direction and the second direction respectively; the first direction is substantially vertical to the second direction; and the conducting element is arranged on the conducting pattern and is electrically connected with the conducting parts. By the display device, the grounding impedance of the conducting element and the grounding region can be reduced; and the lateral pushing stress-resistant strength of the conducting element can also be improved. Therefore, the problems that the conducting element is poor in contact or falls off can be solved, thereby improving the protection capability for electromagnetic interference and electrostatic discharge of the display device.
Owner:INNOLUX CORP
Four-plus-one surge absorbing type grounding device
ActiveCN106410442AReduce resistive componentReduce the perceptual weightConnection contact member materialEngineeringLimiter
The invention provides a four-plus-one surge absorbing type grounding device comprising a current guiding grid and a ground potential limiter connected with the current guiding grid. The current guiding grid is formed by shunt electrodes, current-guiding anti-corrosion concrete belts and horizontal grounding bodies. Various current releasing channels for absorbing, consuming, and releasing are formed under the ground, so that resistive components and inductive components of the grounding system can be reduced simultaneously and total surge-to-ground releasing is realizing by means of absorbing one part, consuming one part, and discharging one part. The provided grounding device has advantages of low ground potential, simple design, convenient installation, accurate detection, reliable work and low manufacturing cost.
Owner:WUHAN QIANGBAO TECH
Elastic wave device and elastic wave module
ActiveUS20170222625A1Increase of the out-of-band attenuationReduce ground impedanceImpedence networksPrinted circuit aspectsUltrasound attenuationOptics
An elastic wave device includes a first piezoelectric substrate including a first principal surface and a second principal surface, a second piezoelectric substrate including a first principal surface and a second principal surface and with a greater thickness than that of the first piezoelectric substrate, and ground terminals located on the second principal surface of the first piezoelectric substrate. The first principal surface of the first piezoelectric substrate and the first principal surface of the second piezoelectric substrate are joined to face each other. On the first principal surface of the first piezoelectric substrate, a first elastic wave filter is located. On the first principal surface of the second piezoelectric substrate, a second elastic wave filter is located. The out-of-band attenuation of the first elastic wave filter is greater than the out-of-band attenuation of the second elastic wave filter.
Owner:MURATA MFG CO LTD
Elastic wave device and elastic wave module
ActiveUS10171064B2Increase of the out-of-band attenuationReduce ground impedanceImpedence networksPrinted circuit aspectsUltrasound attenuationOptics
An elastic wave device includes a first piezoelectric substrate including a first principal surface and a second principal surface, a second piezoelectric substrate including a first principal surface and a second principal surface and with a greater thickness than that of the first piezoelectric substrate, and ground terminals located on the second principal surface of the first piezoelectric substrate. The first principal surface of the first piezoelectric substrate and the first principal surface of the second piezoelectric substrate are joined to face each other. On the first principal surface of the first piezoelectric substrate, a first elastic wave filter is located. On the first principal surface of the second piezoelectric substrate, a second elastic wave filter is located. The out-of-band attenuation of the first elastic wave filter is greater than the out-of-band attenuation of the second elastic wave filter.
Owner:MURATA MFG CO LTD
Wind turbine fault detection circuit and method
ActiveUS9568532B2Accurate measurementAccurate and reliable identificationEngine fuctionsMachines/enginesTurbineComparator
A wind turbine fault detection circuit is designed to determine presence of a fault. In a described embodiment, the wind turbine fault detection circuit utilizes a magnetometer in the form of a hall-effect sensor coupled between a power converter and a ground element to measure a ground current from the power converter to obtain a real ground current. The wind turbine fault detection circuit utilizes a comparator to determine presence of a fault based on the real ground current.
Owner:VESTAS WIND SYST AS
Underground emergency searching and rescuing wireless communication system for transmitting signals by utilizing rail
InactiveCN101737081AEasy to moveEasy to carryMining devicesTransmissionSearch and rescueSTI Outpatient
The invention belongs to a wireless communication system in an electronic and information field, in particular relating to an underground emergency searching and rescuing wireless communication system for transmitting signals by utilizing a rail. The underground emergency searching and rescuing wireless communication system for transmitting the signals by utilizing the rail does not need to rely on a transmission network possibly destroyed and can also ensure convenient moving and carrying under extreme conditions, such as mine accidents and the like, and can be used as a communication measure for searching and rescuing in an emergency. The wireless communication system is characterized in that an underwater rail is used as a carrier for transmitting electric signals. The wireless communication system adopts low-frequency or very low-frequency wireless electric signals with several kilometers of wave length and strong barrier penetrating ability and uses the rail as a wireless transmitting and receiving antenna so as to ensure that people trapped underwater can keep communication with people on the ground in an emergency. The invention provides a professional emergency searching and rescuing wireless communication system for people trapped underwater.
Owner:张飞然
Fuel injection apparatus for internal combustion engine
ActiveUS20150292458A1Inhibit currentReduce ground impedanceElectrical controlCombustion enginesPower flowExternal combustion engine
A fuel injection apparatus for an internal combustion engine having a plurality of cylinders is provided. The fuel injection apparatus includes a fuel injection valve and an in-cylinder pressure sensor disposed for each of the plurality of cylinders. The fuel injection valve injects fuel into a combustion chamber of each cylinder and the in-cylinder pressure sensor detects a pressure in the combustion chamber. The fuel injection apparatus includes a cylinder pair actuating circuit and a noise suppressing circuit. The cylinder pair actuating circuit is provided corresponding to a cylinder pair which is a combination of two cylinders included in the plurality of cylinders, for supplying actuating current to two actuating solenoids of the two fuel injection valves mounted on the cylinder pair. The noise suppressing circuit is provided between the cylinder pair actuating circuit and the actuating solenoids. The noise suppressing circuit includes two output terminals connected respectively to the two actuating solenoids of the two fuel injection valves. When actuating one of the two injection valves, the grounding impedance between the output terminal connected to the actuating solenoid of the other of the two injection valves and the ground, is reduced.
Owner:HONDA MOTOR CO LTD +1
A Guard Ring for Gallium Nitride-Based Active Devices
ActiveCN112382625BReduce ground impedanceReduce parasitic resistanceSemiconductor/solid-state device detailsSolid-state devicesCapacitanceGround impedance
The invention discloses a protection ring of a gallium nitride-based active device, and relates to a new generation of information technology. The guard ring includes an ohmic contact layer arranged on the substrate to form a closed loop, and a first metal layer is stacked on the ohmic contact layer; the first metal layer is connected to the second metal layer above through a vertical through hole, The second metal layer is provided with a microstrip line, and the microstrip line is connected in series with the lumped capacitor and is electrically connected to the ground via. The advantage is that by adjusting the size of the lumped capacitor reasonably, the ground impedance of the guard ring can be minimized, and the high-frequency noise generated by the active devices in the ring can be effectively absorbed and exported to the reference ground plane. Simulation tests show that adding a guard ring can improve high-frequency noise isolation by more than 10dB. The disposition of the first metal layer can reduce the parasitic resistance of the ohmic contact layer.
Owner:深圳市易星标技术有限公司
Installation device and method of radio frequency power amplifier with radiating and grounding performances
ActiveCN102638958BLow costSimple structureCasings/cabinets/drawers detailsResilient/clamping meansAudio power amplifierEngineering
Owner:北京市万格数码通讯科技有限公司
Method and device for reducing grounding impedance of transformer substation grounding grid by additionally arranging capacitor module
ActiveCN112147463AReduce ground impedanceReduce the inductance componentFault location by conductor typesGrounding gridCapacitance
The invention relates to a method and a device for reducing the grounding impedance of a transformer substation grounding grid by additionally arranging a capacitor module. The device comprises a plurality of capacitor grounding devices, wherein each capacitor grounding device comprises a plurality of capacitor units, an epoxy resin cylinder, a damp-proof sealing ring, a connecting conductor and ametal disc; and the capacitor units are connected in series to operate, the capacitor units are wrapped by the epoxy resin cylinders, the connecting conductors are used for connecting the capacitor units and penetrating through the epoxy resin cylinders, sealing rubber pads are used at the joints of the connecting conductors and the upper ends and the lower ends of the epoxy resin cylinders, andthe metal discs are used at the tail ends of the capacitor grounding devices. According to the method and device, the inductance component proportion of the grounding impedance of the transformer substation grounding grid is measured by using a grounding impedance testing instrument, the specific inductance value of the transformer substation grounding grid is obtained, then the number of the required capacitor grounding devices is obtained, after simulation calculation verification, the corresponding number of capacitor grounding devices are welded to the transformer substation grounding gridto reduce the inductance component of the transformer substation grounding grid, and the effect of reducing the grounding impedance of the transformer substation grounding grid is achieved.
Owner:HONGHE POWER SUPPLY BUREAU OF YUNNAN POWER GRID
display device
ActiveCN105873342BImprove the protective effectIncreased resistance to lateral thrust stress strengthElectrostatic chargesIdentification meansElectromagnetic interferenceDisplay device
A display device includes a display panel, a circuit board and a conductive element. The circuit board is adjacent to the display panel and is electrically connected to the display panel. The circuit board has at least one conductive pattern arranged in a grounding area. The conductive pattern includes a plurality of conductive parts arranged at intervals. These conductive parts are arranged along a first direction and a first direction. The quantity of the two directions is multiple respectively, and the first direction is substantially perpendicular to the second direction. The conductive element is disposed on the conductive pattern, and the conductive element is electrically connected to these conductive parts. The present invention can not only reduce the grounding impedance between the conductive element and the grounding area, but also improve the lateral thrust resistance of the conductive element. Therefore, problems such as poor contact or falling off of the conductive element can be avoided, and the electromagnetic interference and static electricity of the display device can be improved. discharge protection.
Owner:INNOLUX CORP
A new type of unidirectional microphone
ActiveCN104066022BEffective filteringImprove consistencyMouthpiece/microphone attachmentsConductive pasteAir filter
The invention discloses a novel unidirectional microphone, which comprises a dust-proof net, a casing, a circuit board, a vibrating film, a cavity, a back pole, and conductive glue. A sound groove is set between the glue, a micro-shaped exhaust groove is set in the cavity, and an exhaust hole is set in the outer shell. The exhaust hole corresponds to the micro exhaust groove of the cavity to form an acoustic cavity exhaust system, so that the present invention can filter out ambient noise. , to reduce the sound in other directions, so as to collect clear high-fidelity sound in one direction, and the invention is specially designed for the vehicle with a consistent mechanical structure, with better use effect and longer life.
Owner:ZHONGSHAN TIANJIAN ELECTROACOUSTIC
Motor controller control panel and grounding method thereof
PendingCN114567963AImprove EMC performanceReduce ground impedancePrinted circuit groundingScreening casingsNew energyControl engineering
The invention provides a motor controller control panel which is suitable for a new energy vehicle, the motor controller control panel comprises at least four layers of PCBs, the surface layer and the bottom layer of the motor controller control panel are used for arranging signal lines of a motor controller, and the bottom layer of the motor controller control panel is used for arranging signal lines of the motor controller. The inner layer of the motor controller control board is used for arranging a power line and a ground line of the motor controller.
Owner:HUNAN CSR TIMES ELECTRIC VEHICLE
Shielding piece and electronic equipment
PendingCN114258255AGood adhesionCoating thickness is smallAntenna couplingsEarth/grounding circuitsThin membraneElectrically conductive
The invention provides a shielding piece and electronic equipment. Relates to the technical field of electronic equipment. The shielding member comprises a conductive metal film and an adhesive. Wherein the conductive metal film comprises a base body and conductive protrusions, the base body and the conductive protrusions are of an integrally-formed structure, and the conductive protrusions are arranged on at least one surface of the base body. The adhesive is arranged between every two adjacent conductive protrusions, the shielding part can be bonded to the structural part through the adhesive, and when the adhesive is bonded to the structural part, the conductive protrusions make contact with the structural part to conduct electricity, so that the shielding effect on the structural part is achieved. In addition, the base body and the conductive protrusions of the shielding piece are of an integrally-formed structure, impedance of the shielding piece can be reduced, and therefore the shielding effect of the shielding piece is improved.
Owner:HUAWEI TECH CO LTD
A drainage grounding method for suppressing ground potential rise
InactiveCN109038155AReduce the charge density at the tipLow ionization discharge voltageLine/current collector detailsConnection contact member materialHigh pressureSafe operation
The invention discloses a drainage grounding method for inhibiting ground potential rise, which comprises a grounding down lead and a grounding electrode, the grounding electrode is arranged in an original earth diversion area and is connected with the grounding down lead. Also included are a first grounding member and a second grounding member, both of which are disposed in the soil diversion region, and the resistivity of the first grounding member is smaller than the resistivity of the soil diversion region, and the resistivity of the second grounding member is smaller than the resistivityof the first grounding member; and the first grounding member is positioned outside the grounding electrode and in good contact with the grounding electrode, and the second grounding member is positioned below the first grounding member and in good contact with the lower portion of the grounding electrode. The invention can effectively suppress the transient ground counterstrike voltage caused bythe end effect of the grounding device under the lightning impulse, The invention solves the problem that the transient electric potential of the high-voltage transmission and transformation system issharply increased due to the end effect of the grounding device under the lightning impulse in the existing grounding technology, the lightning current cannot be safely and effectively released, theground potential counter-strike voltage is formed, and the safe operation of the power supply system is seriously affected.
Owner:STATE GRID FUJIAN ELECTRIC POWER CO LTD +1
FPC steel sheet reinforcement optimization method, FPC board steel sheet reinforcement structure and electronic equipment
PendingCN111565511APrevent oxidationAvoid WeldingConductive pattern reinforcementConductive pattern polishing/cleaningSurface cleaningSoldering
The invention relates to the technical field of circuit boards, in particular to an FPC (Flexible Printed Circuit) steel sheet reinforcement optimization method. An FPC board and a steel sheet are included. The method comprises the following steps of S1, respectively forming via holes in the FPC board or the steel sheet; S2, arranging an activation layer on one surface of the steel sheet; S3, arranging an adhesive layer on the activation layer, and attaching the FPC board to the steel sheet; S4, carrying out surface cleaning on the via hole after lamination; and S5, arranging a soldering tin material on the via hole and carrying out curing treatment to realize soldering tin interconnection of the FPC board and the steel sheet. The invention also provides an FPC board steel sheet reinforcing structure. The invention provides the FPC steel sheet reinforcement optimization method and the FPC board steel sheet reinforcement structure. The FPC steel sheet reinforcing effect is achieved, theactivation layer is arranged on the steel sheet, and the surface is cleaned before tin soldering, so that the steel sheet and the FPC board can be conducted through tin soldering, the grounding impedance performance is improved, and the cost is greatly reduced.
Owner:成都大超科技有限公司
Display device
InactiveUS20160212894A1Improve adhesionReduce ground impedanceCasings with connectors and PCBPrinted circuit groundingDisplay deviceEngineering
A display device includes a display panel, a circuit board, and a conductive element. The circuit board is adjacent to the display panel and electrically connected to the display panel. The circuit board has at least a conductive pattern configured at a ground zone, and the conductive pattern has a plurality of conductive portions spaced apart each other. The quantities of the conductive portions respectively arranged along a first direction and a second direction are plural, and the first direction is substantially perpendicular to the second direction. The conductive element is disposed on the conductive pattern, and the conductive element is electrically connected to the conductive portions.
Owner:INNOLUX CORP
A grounding process for mf/hf system
ActiveCN107819210BReduce ground impedanceMeet grounding anti-interference requirementsConnection contact member materialCopper platingGround system
The invention provides an MF / HF system grounding technology. The MF / HF system grounding technology includes the steps: acquiring on iron block, polishing the surface of the iron block to remove the oxide layer, and coppering the iron block; acquiring one copper sheet, and performing nickel plating processing on the iron block and the copper sheet; welding the copper sheet with the iron block through soldering tin; and welding the iron block with a sticker ship body, wherein the copper sheet is connected with the grounding point of an MF / HF system grounding system.
Owner:上海宜通海洋科技股份有限公司
Fixing device and method for power amplifier
ActiveCN103607843BGuaranteed reliabilityLow reliabilityPrinted circuit non-printed electric components associationCooling/ventilation/heating modificationsElectricityAudio power amplifier
The invention discloses a fixing device and method of a power amplifier. The fixing device of the power amplifier includes: a fixing block, including a body and a convex part protruding from the body, and the top of the convex part is welded to the power amplifier; a PCB, including a The convex part is adapted to connect the through hole, the connecting part arranged around the through hole and grounded; the convex part is inserted into the through hole, and the thickness of the PCB is equal to the thickness of the convex part; through the electrical connection between the body and the connecting part, the fixed block is grounded; the heat sink , connected to the bottom surface of the body away from the top of the convex part and the PCB. Through the shape design of the fixing block and its connection with the PCB and the radiator, the present invention makes the cost of the fixing device of the power amplifier lower, the grounding impedance is low and the heat dissipation performance is good; and the manufacturing process of the present invention is simpler and the degree of automation is higher High, while ensuring the reliability of the power amplifier, it reduces the overall production cost and improves the cost performance of the product.
Owner:SHENZHEN EXCERA TECH
A carbon fiber composite alloy grounding body
ActiveCN107342467BImprove conductivityLower resistanceCouplings bases/casesConnection contact member materialAlloySteel belt
Owner:吉林市能兴电力设备有限公司
Vehicle conductor device with voltage stabilizing surge prevention character
InactiveCN100413733CBurn completelyReduce jitterBatteries circuit arrangementsTransformersElectrical resistance and conductanceElectricity
A voltage stabilizing and surge preventing vehicle grounding system is essentially constructed of a surge absorber, a surge suppresser, and a multi-taped close loop grounding wire. The positive terminal of the surge absorber is connected to a first conductor of the surge suppresser, whereas the negative terminal of the surge absorber is connected to the negative terminal of the vehicle generator. A second conductor of the surge suppresser is connected to the positive terminal of the vehicle generator so as to stabilize the output voltage of the generator and prevent the impulse surge from the generator. The grounding wire is formed into a closed loop consisting of a first half side and a second half side, and tapped off from the modes en route to ground the negative terminals of the component devices of the vehicle along with the chassis so as to minimize the grounding resistance thereby further stabilizing the generator voltage and improving engine efficiency and signal precision of the computer that helps upgrade the response of the mechanical components of the vehicle to the computer signal.
Owner:苏 志扬
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