90results about How to "Achieve grounding" patented technology

An inverter (1) for a grounded direct voltage source, in particular for a photovoltaic generator (2), a battery or a fuel cell, for converting the direct voltage into an alternative voltage with a DC-DC converter (3) and a pulse inverter that is supplied by said DC-DC converter (3), said DC-DC converter (3) being configured to be an oscillating circuit inverter and comprising a series resonant oscillating circuit, said DC-DC converter (3), which is configured to be an oscillating circuit inverter, being configured to be a series-compensated oscillating circuit inverter with a choke (L1) and a series-mounted capacitor array consisting of two or several oscillating circuit capacitors, a rectifier bridge branch including 2 diodes (D3, D4; D5, D6, . . . ), being connected to each of the partial oscillating circuit capacitors, said rectifier bridge branch being connected with its positive or its negative pole to output side intermediate circuit capacitors which are preferably connected in series so that said DC-DC converter (3) delivers at least two bipolar output voltages and is combined with the pulse inverter (4) with a divided voltage intermediate circuit that is supplied from the oscillating circuit inverter.

The invention relates to the technical field of electrostatic protection and discloses an electrostatic protection method and structure for an under-plate type microphone. The electrostatic protection method and structure for the under-plate type microphone are used for a cell phone with the internally-arranged under-plate microphone. A through hole corresponding to the microphone and penetrating to the outside of the cell phone is formed in an outer shell of the cell phone. A PCB plate is arranged in the cell phone. A voice inlet hole communicated with the microphone and the through hole is formed in the PCB plate. A cushion ring electrically connected with the PCB plate is attached to the edge of one end of the voice inlet hole through SMT (surface mount technology). According to the electrostatic protection method and structure, the cushion ring is arranged in the voice inlet hole in the PCB plate through the SMT, complete grounding of the voice inlet hole is realized, the static electricity outside the cell phone is guided onto the PCB plate through the cushion ring before entering the microphone to realize ground connection, so that the outside static electricity is prevented from entering the microphone to damage a chip, and the service life of the microphone is prolonged.

The invention discloses a method suitable for determining a grounding resistance scheme of a flexible direct-current power distribution system. According to the method, the influence of grounding resistance on a fault ground current under a monopolar grounding fault of the direct-current power distribution system is determined through analyzing a path of a fault current under the monopolar grounding fault of the system; the requirements for ground current are determined from the perspective of ensuring continuous operation safety of the system under the monopolar grounding fault and ensuring direct-current differential protection correct actions, thereby determining requirements for grounding resistance respectively; and a grounding scheme that a neutral point is grounded through a parallel resistor is disclosed through synthesizing requirements for the grounding resistance in various aspects. The grounding scheme disclosed by the invention is capable of increasing power supply reliability of the flexible direct-current power distribution system, and ensuring flexibility of system protective actions.

The invention discloses adhesive tape used as a shielding cover and application of the adhesive tape. When used as the shielding cover, the adhesive tape is excellent in shielding effect, thin and light. The adhesive tape comprises a release layer, a conductive adhesive layer, a fiber layer, a conductive adhesive layer, a conductive base body layer and an anti-oxidization conductive coating which are sequentially connected. The thickness of the adhesive tape is 0.03-0.3 mm. The conductive base body layer is a copper foil layer, an aluminum foil layer, a conductive fabric layer or a stainless steel layer. The thickness of the conductive base body layer is 0.005-0.25 mm. The adhesive tape can achieve electricity conductivity, shielding, grounding, anti-oxidization, heat conductivity and the like at the same time.

A composite ignition device includes a positive electrode having a tip formed thereon that is bonded to a first insulator to form a firing cone assembly. A second insulator having a negative capacitive element embedded therein is attached to the firing cone assembly. A positive capacitive element is disposed in the second insulator and is separated from the negative capacitive element by the second insulator. The positive capacitive element is coupled to the positive electrode. The positive and negative capacitive elements form a capacitor. A resistor is coupled to the positive capacitive element. An electrical connector is coupled to the resistor and attached to the second insulator. A shell includign a negative electrode having a tip is attached to the second insulator and the firing core assembly and coupled to the negative capacitive element. The negative electrode tip is spaced apart from the positive electrode tip.

The invention discloses a multilayer anisotropic puncture type conductive fabric adhesive and an FPC reinforcing shielding structure using the same, wherein the conductive fabric adhesive comprises anupper conductive adhesive layer, a lower conductive adhesive layer and an ultra-thin conductive fabric layer formed between the upper conductive adhesive layer and the lower conductive adhesive layer; the thickness of the upper conductive adhesive layer is 15-25[mu]m, and the thickness of the lower conductive adhesive layer is 35-45[mu]m; the upper and lower conductive adhesive layers comprise metal conductive particles, wherein the metal conductive particles are at least two kinds of a tree branch shape, a chain shape, a needle shape, a slice shape and a sphere shape, and particle sizes of the metal conductive particles are 40-100[mu]m; and the thickness of the ultra-thin conductive fabric layer is 5-15[mu]m. According to the adhesive, the characteristics of an extremely good grounding effect and an electromagnetic shielding effect, high electrical property, excellent bonding strength, excellent tin soldering property, excellent reliability, excellent flame resistance and the like can be achieved by combining with a reinforcing material and an EMI film under the condition that the FPC does not have a reserved grounding hole, and in addition, the production process can be reduced,and the production cost can be lowered.

The invention relates to the technical field of electric power system application equipment, in particular to an isolation switch and an electric pole assembly. The isolation switch comprises a base and a knife switch; the base is connected with a first moving contact through a first insulator, connected with a second moving contact through a second insulator, and connected with a static contact through a third insulator; the first moving contact is connected with a first wiring terminal; the second moving contact is connected with a second wiring terminal; the static contact is connected witha third wiring terminal; and the first end of the knife switch is rotationally connected with the static contact, and the second end can be closed with or separated from the first moving contact andthe second moving contact separately. The electric pole assembly comprises the isolation switch. By virtue of the isolation switch and the electric pole assembly provided by the invention, the technical problems that hanging of a grounding wire of a distribution transformer takes relatively long time, and the overhauling efficiency of the distribution transformer is lowered in the prior art are solved.

The invention belongs to the technical field of electrical equipment and particularly relates to a PCB (printed circuit board) signal unit shield grounding device. The PCB signal unit shield groundingdevice comprises a shielding case used for shielding PCB signal units, connecting pieces are arranged on the outer side of the shielding case, and after the PCB signal units are shielded by the shielding case, the connecting pieces contact with the inner wall of a cabinet shell provided with a PCB. The shielding case used for shielding the PCB signal units is arranged, the connecting pieces are arranged on the shielding case, and the PCB signal units are shielded and grounded, so that problems that PCB signal units are grounded badly leading to mutual interference in the prior art are solved,the PCB signal units are assuredly well grounded, good shielding effect is achieved, normal use of the PCB signal units and the PCB is guaranteed, and good use functions are achieved.

The invention provides a light reception sub-module and an optical module. The light reception sub-module comprises a metal casing, and a flexible board and a light transmission array extend into themetal casing. The flexible board is provided with a metal layer, and the upper and lower surfaces of the flexible board are provided with a light reception driving chip and a metal cushion block respectively. The metal layer makes contact with the light reception driving chip and the metal cushion block. The surface of the metal cushion block is provided with a metal boss, and a light reception chip is arranged on the metal boss. The light reception chip is in wiring connection with the light reception driving chip. The tail end of the light transmission array includes a reflection inclined plane, and used to transmit light to the light reception chip. An insulated heat-conduction cushion block is arranged between the bottom of the metal casing and the metal cushion block, and used to isolate the metal casing from the metal cushion block. Thus, electric transmission does not occur between the metal casing and the metal cushion block or between the flexible board and the metal casing, the light reception sub-module has a good electric isolation effect, and further the optical module has a good electric isolation effect.

The invention discloses a plastic packaging motor with a mounting foot grounding structure and belongs to the technical field of motors. At present, after using the plastic packaging motor, the molding compound is insulated, other components in an air conditioner system cannot connect with the ground through motors, the grounding should be realized through additional modes, and this would increase the air conditioner system complexity and manufacturing cost. The plastic packaging motor with the mounting foot grounding structure comprises a motor body and a mounting foot for mounting the motor body and is characterized in that the mounting foot is provided with a grounding metal piece, and the grounding metal piece realizes grounding through a ground wire connected with the same. According to the technical scheme, the grounding of the air conditioner system is realized through arranging the grounding metal piece at the mounting foot, the structure is simple, the plastic packaging motor has the consistent safety effect with a steel shell motor, and moreover, the mounting foot is provided with the grounding metal piece so that the connecting intensity between the plastic packaging motor and air conditioner body can be improved.

The invention discloses multifunctional ship electrical equipment grounding equipment and application thereof in the field of electrical automation so as to improve the current-carrying capacity of agrounding device and protect a local circuit. According to the technical scheme, the grounding equipment comprises a common grounding wire brake and a standby grounding wire brake, and a threshold valve and a shunt are arranged between the standby grounding wire brake and a main circuit; the standby grounding wire brake comprises a box body, a first helical gear electrically connected with the shunt, and a second helical gear engaged with the first helical gear; the head end of a driving shaft is connected with the second helical gear, the tail end of the driving shaft is connected with a limiting device, a cylindrical cam is arranged between the second helical gear and the limiting device, and a moving block is slidably connected in a sliding groove of the cylindrical cam. Compared with the prior art of overall circuit detection, the technical scheme has the advantages that the threshold valve is used for guiding the overload current, so that the current drives the standby grounding wire brake, the grounding wire is connected with the ground to form an open circuit, overload protection is carried out, and the circuit is prevented from being burnt out.

The invention relates to a bow-tie antenna device, in particular to an ultra-wideband cavity-backed bow-tie antenna device for a ground penetrating radar, and aims to solve the problems that in the prior art, a cavity-backed bow-tie antenna with the 3dB bandwidth ranging from 50 MHz to 300 MHz and a cavity-backed bow-tie antenna with the 3dB bandwidth ranging from 300 MHz to1 GHz cannot share one type of trailers, walking measurement with the height of an antenna radiating surface away from the ground cannot be achieved in an adjustable mode, and grounding measurement of the antenna radiating surface cannot be achieved. The device comprises a cavity-backed bow-tie antenna, a first common trailer with landing controllable, a second common trailer with landing controllable and a common frame, wherein the first common trailer with landing controllable is installed on one side of the common frame, the second common trailer with landing controllable is arranged on the other side, opposite to the first common trailer with landing controllable, of the common frame, and the cavity-backed bow-tie antenna is fixedly installed on the common frame through threaded connection. The ultra-wideband cavity-backed bow-tie antenna device belongs to the field of earth probing.

The invention discloses an electric connector. The electric connector comprises a terminal module, wherein the terminal module comprises an insulating body, a first row of terminals and a second row of terminals which are arranged along the transverse direction; the insulating body comprises a base part and a tongue plate positioned in front of the base part; each of the first row of terminals comprises a first embedding part fixed inside the base part, a first contact part which extends forwards from the first embedding part and is exposed on the first surface of the tongue plate and a first welding part which extends backwards from the first embedding part and exceeds the base part; each of the second row of terminals comprises a second embedding part fixed in the base part, a second contact part which extends forwards from the second embedding part and is exposed on the second surface of the tongue plate and a second welding part which extends backwards from the second embedding part and exceeds the base part; the first row of terminals comprises a plurality of internal terminals and two ground terminals positioned on two opposite sides of the internal terminals, wherein each ground terminal is provided with a locking part exposed out of the transverse side of the tongue plate, and the locking parts are used for locking a butting connector, so that the forming process is simpler and more convenient.

A grounding mechanism of electronic equipment comprises a shell body, an electric node connecter arranged in the shell body, and a base. The grounding mechanism is characterized in that the electric node connecter is electrically connected with the base through a conductive rubber so as to realize the grounding. In the invention, the electric node connecter is communicated with the base through the conductive rubber, so as to realize the grounding, and the conductive rubber is not easy to become deformed, so that the invention not only improves the grounding quality of the electronic equipment but also requires not too much about the assembly, the package and the transportation of the electronic equipment, thus reducing the production cost.

The invention discloses a mobile communication device which comprises a circuit board and an electric conduction shell, wherein a metallization through hole is arranged in the circuit board, an electric conduction convex pole is arranged on the electric conduction shell and corresponds to the metallization through hole, the electric conduction convex pole is used for fixing the circuit board, and the electric conduction convex pole is in contact with the metallization through hole. By adopting the mode, the mobile communication device is capable of realizing that the metal shell is grounded under the conditions of no individual occupying of a cinnabar space of the circuit board and no individual designing of the metal shell grounding structure.

The embodiments of the invention provide a mobile terminal which includes a metal rear cover, a mainboard, and a loudspeaker support. The mobile terminal is characterized in that the loudspeaker support has a tune trope which is externally provided with a through hole. The side of the loudspeaker facing towards the metal rear cover is provided with a first metal area, and the side of the loudspeaker support facing away from the metal rear cover is provided with a second metal area. The through hole enables communication between the first metal area and the second metal area. The metal rear cover and the first metal area are communicated. The mainboard is provided with a spring thereon. The spring abuts against the second metal area. According to the embodiments of the invention, the mobile terminal is intended for addressing the problem of voice leaking in the periphery of the through hole of the tune trope after sealing caused by the fact that the grounding of the metal rear cover requires penetration of the through hole of the tune trope.

The invention provides a grounding and phase dislocation detecting circuit of alternating current charging equipment, and relates to the field of equipment detection. The grounding and phase dislocation detecting circuit of the alternating current charging equipment comprises a live wire, a zero wire, a ground wire, a transformer and a controller; the ground wire is connected with the live wire and the zero wire separately, a primary coil of the transformer is connected between the ground wire and the zero wire, and a secondary coil of the transformer is electrically connected with the controller; the transformer is used for sensing voltage between the zero wire and the ground wire; the controller is used for determining the grounding and phase dislocation state of the alternating currentcharging equipment according to the voltage of the secondary coil of the transformer. The grounding and phase dislocation detecting circuit of the alternating current charging equipment has the advantage of more accurately determining the grounding and phase dislocation state.

The invention relates to a box-type high-voltage power capacitor, comprising a shell, a core and a compensating heat dissipation device; the shell is a hollow structure made of a stainless steel plate, and the gap inside is filled with an insulating impregnating agent; The core is mounted in the shell and immersed in the insulation impregnating agent; A sleeve connected with the core is arranged on the top of the shell; The compensating heat dissipation device is mounted on the outer side wall of the shell, and expands or contracts according to the thermal expansion and cold contraction of theinsulating impregnating agent to compensate for volume change, and also causes the circulating flow of the insulating impregnating agent to accelerate the dissipation of heat inside the shell. The invention has the advantages that the stainless steel plate is directly used on the capacitor instead of a common steel plate, and the surface treatment cost can be saved; the compensation heat dissipation device replaces an expander with more solder joints, reduces the possibility of oil leakage, improves the reliability of the capacitor, reduces the operation temperature rise of the capacitor andprolongs the service life of the capacitor.

The invention relates to a suspension frame structure. The suspension frame structure can realize that an automatic guiding vehicle used in factory automation and the like can keep level and driving shaft grounding on the out-of-flatness ground, and the referred suspension frame structure does not have the elasticity up and down. The embodiment of the invention provides a non-elastic suspension frame structure of the automatic guiding vehicle, the non-elastic suspension frame structure of the automatic guiding vehicle is connected with a frame part and driving wheel assemblies of the lower part of the automatic guiding vehicle, and non-elastic suspension frame structure of the automatic guiding vehicle comprises vertical guiding parts, a rotary shaft, a first cam part and a second cam part. A pair of the driving wheel assemblies are supported to move in a manner of moving along with the vertical direction relative to a pair of the driving wheel assemblies, the rotary shaft is rotationally fixed to the frame part, and the first cam part and the second cam part are combined on the rotary shaft in an eccentric mode and rotate together with the rotary shaft. the upper end surfaces of the driving wheel assemblies are contacted with the periphery surfaces of the first cam part and the second cam part, and the eccentric direction of the first cam part from a center of the rotary shaftand the eccentric direction of the second cam part from the center of the rotary shaft are the opposite directions.

The invention provides an open-loop Hall current sensor, and belongs to the technical field of sensors, and the open-loop Hall current sensor comprises a housing which is provided with a concave cavity, wherein each corner of the concave cavity is provided with a connecting column; two iron cores, wherein an air gap is formed between the opening ends of the two iron cores, and the two iron cores are embedded in the concave cavity; two fixing pieces connected to the air gap of the iron core respectively through laser welding, wherein notches corresponding to the air gap in position and pins extending outwards are arranged on the fixing pieces; and a main circuit printed board, wherein the iron core is covered with the main circuit printed board, the main circuit printed board and the pins are welded and fixed, and connecting holes fixedly connected with the corresponding connecting columns in an inserted mode are formed in all corners of the main circuit printed board. According to the invention, through the fixing piece, the air gap spacing on the iron core is ensured to be constant, the grounding of the iron core is realized, and the problems of many assembly parts, complex assembly, easy breakage and the like in the prior art are solved, so that the assembly efficiency and the reliability of current signal detection are improved.

The invention discloses an intermediate-voltage AC-DC high-power isolating switch with a grounding function. The isolating switch comprises a base, transmission components, conductive components, insulating components, driving and control components and a grounding switch component. The grounding switch components comprises the components of a static contact which is arranged on an output terminal, a moving contact which can move relative to the static contact, and a static driving mechanism for driving the moving contact to move. The moving contact can realize on-and-off with the static contact in a motion process. The transmission components drive a contact driving mechanism to act in an action process. Furthermore when a moving knife switch is on with a wire inlet terminal, the moving contact is separated from the static contact. When the moving knife switch assembly is separated from the wire inlet terminal, the moving contact is on with the static contact. The insulating switch performs on-off controlling on the moving knife switch assembly and furthermore can realize on-off operation on the grounding switch component, thereby realizing switching-on of the grounding switch when the moving knife switch of the isolating switch is switched off, realizing a grounding function, and ensuring life safety of maintenance personnel in a locomotive.