40results about How to "Uniform electric field strength" patented technology

An interior antenna (29, 29) of a vehicle communication apparatus (21) for performing wireless communication with a portable terminal device (22) present inside a cabin (11) is disposed in the cabin. The interior antenna includes left and right leaky coaxial cables that can transmit high-frequency band radio waves into the cabin. The left and right leaky coaxial cables are positioned under the cabin and inside left and right door inner panels (72) in a vehicle width direction, either above left and right side sills (51) or at end portions in the vehicle width direction above a floor panel (57), and extend in a vehicle front-rear direction.

The invention discloses a ferroelectric medium-based negative capacitance MoS2 transistor and a preparation method thereof. The preparation method comprises the steps of growing a MoS2 thin film on asurface of a SiO2 substrate; sequentially growing a first High-K layer, a first TiN layer, a ferroelectric thin film layer, a second TiN layer, a second High-K layer which are used as a grid dielectric layer on a surface of the MoS2 thin film; growing a third TiN layer and a Ti/Au metal layer which are used a grid electrode on the grid dielectric layer; and growing two layers of Al metal which areused a source electrode and a drain electrode on the MoS2 thin film layer. The TiN layers wrap the ferroelectric grid dielectric thin film layer, the metal TiN is used for balancing an additional electric field generated by population and turnover of the ferroelectric grid dielectric thin film again, the additional electric field is uniformly applied to the MoS2 thin film layer, the situations that the device is started slowly and a sub-threshold is relatively larger caused by different MoS2 inversion conditions of each point in a channel are prevented, and meanwhile, the situation that the point is easy to break down when point field intensity of the High-K layers is relatively large is also prevented.

The invention discloses a high voltage pulse electric field sterilization common-field treatment chamber with adjustable electrode distance. The treatment chamber consists of two metallic hollow tubular electrodes and an insulator isolation tube, wherein the insulator isolation tube is positioned in a treatment cavity formed between the two metallic hollow tubular electrodes. The metallic hollow tubular grounding electrodes are in threaded fit with the insulator isolation tube, so that the adjustability of the electrode distance in the common-field treatment chamber is realized. The inner ports of the metallic hollow tubular electrodes in the treatment chamber are rounded, so that the strength of a peak electric field nearby the electrodes is reduced, the 'discharge' problem caused by over high local electric field in the treatment chamber is solved, and the electric field in the flowing direction of a material is distributed relatively uniformly. The treatment chamber is simple in structure, low in cost, convenient to process and convenient to disassemble and assemble; the adjustability of the electrode distance in the common-field treatment chamber is realized; and the electrode distance in the treatment chamber can be adjusted according to different application requirements, so that the electric field strength and the electric field distribution in the treatment chamber are improved.

The invention provides a vacuum arc-extinguishing chamber, a contact assembly thereof and current coils used for the contact assembly. The current coils comprise two sub coils which extend in the circumferential direction and are disposed in parallel. Each sub coil comprises an upper coil section and a lower coil section which are arranged in an up-down staggered manner and are electrically connected in series. The two lower coil sections are two one-second turns of coil sections which are symmetrically arranged around a central line of the current coils. Each of the two sub coils is a three-fourths turn of coil section formed by a one-fourth turn of coil section and a one-second turn of coil section. The current of each of two parallel branches formed by the two sub coils flows through the circumferential path of the three-fourths turn of coil section, the current path is short, the integral circuit is relatively small, and the upper and lower coil sections are symmetrically arranged around the center of the current coils, so that the distribution of magnetic fields generated by the current coils is relatively uniform.

The invention provides a vacuum arc-extinguishing chamber, a coil-type contact element and a current coil. The current coil comprises two branch coils extending in the circumferential direction and arranged in parallel. Each branch coil comprises an upper coil section and a lower coil section which are distributed to be staggered in an upper direction and a lower direction and in series conductive connection. The two upper coil sections are two half turning coil sections arranged symmetrically with respect to the center line of the current coil. The two lower coil sections of the two branch coils are two quarter turning coil sections arranged symmetrically with respect to the center line of the current coil. Each branch coil is a three-fourths turning coil section formed by the quarter turning coil section and the half turning coil section. A current in each of two parallel connection branches formed by the two branch coils passes by the circumferential path of the three-fourths turning coil section, the current path is short, the whole circuit is small, the upper coil section and the lower coil section are arranged in central symmetry with respect to the center line of the current coil respectively, and thus distribution of the magnetic field generated by the current coil is uniform.

The present invention provides a fixed contact and a fixed contact module, and a GIS isolation switch. The fixed contact module comprises a fixed contact and an arcing contact, the fixed contact comprises a hollow contact seat, one end, in an axial direction, of the hollow contact seat is provided with an opening configured to allow a moving contact to plug, the other end of the hollow contact seat is provided with a fixed connection structure connected with an insulator, the inner cavity of the hollow contact seat is provided with an installation support, and the arcing contact is installed on the installation support and is extended into the opening. According to the design of the structure, the fixed contact module only needs connection of the fixed contact and the insulator with no need for preservation of a connection position of the arcing contact on the insulator so as to reduce the size of an insertion piece on the insulator; and moreover, the arcing contact is installed on thefixed contact to shorten a distance between the arcing contact and the plugging position, the breaking of the arcing contact is not easy to happen, and the reliability is high.

The invention provides a high-voltage switch with three-phase bodies in triangular distribution. The high-voltage switch comprises the three-phase bodies, an operating mechanism and a transmission mechanism, wherein the three-phase bodies are in triangular distribution; any body comprises an isolating stationary contact, an isolating crank arm, an isolating movable contact, a wire incoming flexible connector and a switch body; the isolating stationary contact is positioned at the top of the body; the isolating movable contact is arranged at the inner end of the isolating crank arm; the isolating crank arm is pivoted below the isolating stationary contact; when the isolating crank arm rotates to a preset position, the isolating movable contact is contacted with the isolating stationary contact and closed; and the switch body is positioned below the isolating movable contact and connected with the outer end of the isolating crank arm through the wire incoming flexible connector. By adoption of a structure that the three-phase bodies are in triangular distribution, the electric field intensity of the high-voltage switch is uniformly distributed. With a reasonable transmission mechanism, the high-voltage switch can operate more conveniently and more reliably.

The invention relates to a single-phase pouring type combination measuring dry transformer. The single-phase pouring type combination measuring dry transformer comprises a resin case, a current transformer and a voltage transformer, wherein the current transformer is arranged at the upper part of the left end of the resin case; the two terminals of the primary coil of the current transformer are respectively connected to two conducting rods vertically arranged at the left end of the resin case; the voltage transformer is arranged at the lower part of the right end of the resin case; the primary winding of the voltage transformer is connected to any terminal of the primary coil of the current transformer in the resin case; the secondary winding of the voltage transformer is connected to a plug column vertically arranged at the upper part of the right end of the resin case; the winding direction of the primary coil of the current transformer is parallel to the winding direction of the primary winding of the voltage transformer. The single-phase pouring type combination measuring dry transformer is simple in structure, convenient to produce, small in occupied space, large in creep distance, uniform in electric field distribution and high in measuring accuracy, has higher dynamic thermal stability and better overcurrent resistance, and can be suitable for being used in a high-pollution and high-altitude environment.

The invention discloses an electrostatic spinning device for multi-jet batch preparation of orderly nanofibers. The device comprises a quantitative liquid supply pump, a liquid guiding pipe, a liquid inlet plate, a nozzle plate, an insulating sleeve, an upper porous plate, a lower porous plate, a roller, a support, a rotating shaft, a coupler, a motor, a pinpoint ground electrode, an X-Y moving platform and a high-voltage power supply. According to the device, multiple jets are generated through multiple nozzles to increase yield; the whipping range of jets is restrained by the electrode which is assisted by the upper and lower porous plates, so that the fibers can be easily subjected to orderly controlled deposition; linkage of rotation and translation can be generated due to the X-Y moving platform and roller collection method; the pinpoint ground electrode is used for focusing nanofiber deposition to carry out accurate and orderly winding collection of nanofibers; the runner optimizing design is introduced into the multiple jets, so that the flowrate at each nozzle is uniform, and the uniformity of the nanofiber diameter can be improved; the nozzles are coated with an insulating material and are electrically insulated, so that the electrostatic inhibiting effect among the nozzles can be reduced, and the intensities of electric fields at the nozzles can be balanced.

The invention discloses a technology for forming oxidation films with consistent thickness. The technology comprises the following steps: (1) uniformly spot-welding a sintered tantalum anode block on a conductive metal bar; (2) placing a bracket with the conductive metal bar in an electrolytic cell; (3) manufacturing a lead frame in a shape of a Chinese character 'wang'; (4) placing the lead frame in the shape of the Chinese character 'wang' on the bracket in a superposed manner and compactly contacting with the metal bar spot-welded with the tantalum anode block; (5) connecting the anode of a power supply to the central position of the lead frame in the shape of the Chinese character Wang, and connecting the cathode of the power supply to the electrolytic cell; and (6) connecting the power supply for medium film forming treatment. The technology provided by the invention has the beneficial effects that the lead frame is manufactured by using a lead, so that the voltage difference between the output end of the power supply and the metal anode block of a valve is effectively reduced, the voltage applied to the anode block is guaranteed, and meanwhile, a current is applied from a terminal of a center shaft of the lead frame in the shape of the Chinese character 'wang', so that the paths of the current flowing to all directions are same, the electric field intensity is uniform, and the consistency of thickness of the generated oxidation films is guaranteed.

The invention discloses a semiconductor process chamber which comprises a chamber body, an upper electrode, a lower electrode, a shielding hood and an impedance adjusting mechanism, wherein the shielding hood is arranged on the chamber body and the shielding hood and the chamber body form an accommodation cavity, the upper electrode, the lower electrode and the impedance adjusting mechanism are arranged in the accommodation cavity, the upper electrode and the lower electrode are arranged oppositely, the upper electrode is located between the lower electrode and the shielding hood and is arranged in an electrically suspended manner, and the shielding hood and the lower electrode are earthed; the impedance adjusting mechanism is movably connected to the shielding hood and is electrically connected to the shielding hood, and the impedance adjusting mechanism can move far away from or close to the shielding hood to adjust the distance between the impedance adjusting mechanism and the upperelectrode; and/or, the impedance adjusting mechanism can move parallel to the shielding hood to change a relative area between the impedance adjusting mechanism and the upper electrode. According tothe scheme, the problem that the wafer coating uniformity is poor can be solved.

The invention provides an energy-saving and environment-friendly high-voltage closed bus. The bus comprises a shell and three busbars, wherein the three busbars are uniformly and fixedly arranged in the shell; and the included angle alpha between the adjacent busbars is 120 degrees. The bus has the following beneficial effects: as the three busbars are uniformly and fixedly arranged in the shell and the included angle alpha between the adjacent busbars is 120 degrees, the synthetic magnetic potential among the busbars is zero; and during distance power transmission, the three busbars are uniformly symmetric, thus avoiding the problem of complex phase change needing to be considered due to the proximity effect and nonuniform three-phase power transmission loss, so the bus is more convenient and safer to use.

The invention discloses a porous medium auxiliary molten salt electrolysis metal refining device, and belongs to the field of molten salt electrolysis metal refining devices. The device comprises a shell, an outer barrel and an inner barrel, wherein a through hole is formed in a barrel body of the inner barrel; an electrode is fixed on the inner wall of the inner barrel; the inner barrel is positioned in the outer barrel; a heating device is arranged on the outer side of the outer barrel; and the outer barrel is positioned in the shell. Multiple cylindrical projections are arranged on the inner wall of the through hole; lattices are arranged on the end surfaces of two ends of the through hole; and the radius of the end surfaces of two ends of the through hole is smaller than the radius of the cross section of the middle part of the through hole. The device aims to overcome the defect of incapability of smoothly performing electrolysis refining due to incapability of fixing electrolytes between crude metal and refined metal with close densities in the molten salt electrolysis refining of metal melts in the prior art, realizes fixation of the electrolytes between the crude metal and the refined metal with close densities, widens the application range of a molten salt electrolysis refining technology, and improves the metal refining effect.

The invention discloses a built-in isolating knife structure for an outdoor intelligent post switch, which comprises an aluminum alloy base and an aluminum alloy housing matched with the aluminum alloy base, The aluminum alloy housing is fastened on the aluminum alloy base to form the outer enclosure box, A plurality of isolate knife main circuit drive structure is arranged in parallel and in series in the outer enclosure box, A left outlet terminal is arranged at that left end of the driving structure of the isolate knife main circuit, a right outlet terminal is arranged at the right end of the driving structure of the isolating knife main circuit, a left voltage sensor and a right voltage sensor are arranged on the driving structure of the isolating knife main circuit, a left current sensor is arranged at the inner end of the left outlet terminal, and a right current sensor is arranged at the inner end of the right outlet terminal; The outer enclosure box and the insulation box are arranged in two layers, and the whole structure is box-type, with built-in isolation knife and voltage/current sensor; the main drive is linearized; the electric field strength is uniform; the arc extinguishing chamber adopts vacuum arc extinguishing chamber; and the insulation medium adopts environment-friendly gas insulation.

The invention provides a Schottky diode and a preparation method thereof. The Schottky diode comprises a substrate and a plurality of P-type junctions. Each P-type junction comprises a first end partand a second end part which are opposite to each other, and the P-type junction is embedded in the substrate so that the second end part is located in the substrate, and the adjacent P-type junctionsare arranged at intervals. The connection line connecting the first end part and the second end part and located on the side surface of the P-junctions is a smooth arc line. With application of the structure that the connection line connecting the first end part and the second end part and located on the side surface of the P-type junctions is the smooth arc line, the electric field strength injected into the edge of the P-type junctions is more uniform, and the reverse withstand voltage and the reliability of the silicon carbide Schottky diode chip can be further improved.

The invention provides a magnetic assembly with high reliability which is used for medium and high voltage electronic systems. The magnetic assembly includes a magnetic core and windings. The magneticcore includes an upper cover plate, a lower cover plate and at least one winding column arranged between the upper cover plate and the lower cover plate. Each winding column is prismatic and is provided with at least three side surfaces. Any two of the at least three side surfaces are intersected to form at least two longitudinal edges. The longitudinal edges are arranged along the longitudinal direction of the winding column. A first semi-conductive component is arranged at a position corresponding to the longitudinal edges between each winding column and the windings.