37results about How to "Avoid potential difference" patented technology

A light emitting device, according to one embodiment, may comprise: a substrate having a pattern part disposed on the upper surface thereof; a first buffer layer disposed on the substrate; a second buffer later disposed on the first buffer layer; a first conductive semiconductor layer disposed on the second buffer layer; an active layer disposed on the first conductive semiconductor layer; a second conductive semiconductor layer disposed on the active layer; and a void layer disposed on the first buffer layer corresponding to the pattern part of the substrate. By further forming a void on the buffer layer, the embodiment has the effect of more effectively preventing defects caused by a potential difference.

A valve gear in which corrosion due to a potential difference does not occur and which can reduce the corrosion occurrence even when loads due to microvibrations are given. The valve gear includes a valve stem and a valve bush that slidably supports the valve stem. The valve stem is formed from a forged part made of a Ni-based superalloy and the valve bush is formed from a cast part made of a Ni-based superalloy. The preferable surface roughness of a sliding surface of the valve stem in contact with the valve bush and the preferable surface roughness of a sliding surface of the valve bush in contact with the valve stem is 100 μM or less in units of Rz.

The invention provides a super-high voltage grading ring and a production process thereof, aiming at the problems that the existing grading ring material is easy to cause potential difference and failure of the grading ring under the super-high voltage. The super-high voltage grading ring comprises an annular grading ring body which is made of semiconductor materials, the outer portion of the grading ring body is coaxially provided with an aluminum ring, a plurality of connection rods are uniformly distributed in an annular interval between the grading ring body and the aluminum ring, and theextension lines of the connection rods pass through the centers of circles of the grading ring body and the aluminum ring. By using the semiconductor material, the produced grading ring has an electric field under the super-high voltage to fundamentally avoid the potential difference problem, and the grading ring is not easy to cause breakdown of a device when the voltage generates voltage jump soas to obviously improve the whole reliability of the device.

The invention relates to an apparatus for production of an electromagnetically shielded connection between a plug arrangement (which has at least one plug) of a first unit and a socket arrangement, which has at least one corresponding socket, of a second unit. The at least one plug and the at least one socket form a plug connection when connected to one another. The plug connection is surrounded by a shielding device which provides good electromagnetic shielding for it and is formed by the at least one plug and the at least one socket independently.

The invention provides a treatment process for preventing membrane corrosive pitting and perforating on the surface of a steel and iron base. The treatment process comprises the following steps that (1) an oxidation layer on the surface of a steel and iron base material is polished and removed; (2) a thermal spraying layer is formed on the surface of the steel and iron base material obtained in the first step through a thermal spraying technology; and (3) membrane laminating is conducted on the surface of the thermal spraying layer obtained in the second step. According to the treatment process, a compact particle surface layer can be formed on the surface of the steel and iron base by adoption of the thermal spraying layer, the homogeneity is good and no lattice defect exists; and potential equalization of the steel and iron base material covered with the surface membrane in a high-temperature state is achieved within the high-temperature range of 280-420 DEG C, the potential difference is avoided and the phenomenon of electrochemical corrosion causing breakdown of the surface membrane is prevented.

The invention discloses a battery component, a battery protection chip and an electronic product, wherein the battery protection chip includes a power supply pin, a ground pin, an inductance access pin, a current detection pin, a discharge control pin and a charge control pin , the chip also includes a voltage control circuit, a discharge control circuit and a charge control circuit. One end of the inductor is connected to the input end of the voltage control circuit, and the other end is electrically connected to the positive terminal of the battery. The discharge control pin and charge control pin of the battery protection chip They are respectively used to control the first NMOS tube electrically connected to the negative terminal of the battery, and the second NMOS tube electrically connected to the negative terminal of the external power supply. The voltage control circuit generates a stable control voltage, so that the conduction state of the two NMOS tubes is not affected by the battery voltage. The impact of the drop, and effectively avoid the potential difference between the inside and outside of the battery due to the disconnection of the negative terminal of the battery.

The invention provides a super-high voltage grading ring and a production process thereof, aiming at the problems that the existing grading ring material is easy to cause potential difference and failure of the grading ring under the super-high voltage. The super-high voltage grading ring comprises an annular grading ring body which is made of semiconductor materials, the outer portion of the grading ring body is coaxially provided with an aluminum ring, a plurality of connection rods are uniformly distributed in an annular interval between the grading ring body and the aluminum ring, and theextension lines of the connection rods pass through the centers of circles of the grading ring body and the aluminum ring. By using the semiconductor material, the produced grading ring has an electric field under the super-high voltage to fundamentally avoid the potential difference problem, and the grading ring is not easy to cause breakdown of a device when the voltage generates voltage jump soas to obviously improve the whole reliability of the device.

The invention discloses an electroplating production line for the inner surface of a crystallizer, which comprises a washing section, an electroplating section, a hoisting device and an electrolyte circulation supply system. The electroplating section is provided with a crystallizer fixed base, a tubular crystallizer and an anode titanium basket. The fixed base of the crystallizer is provided with an electrolyte liquid inlet pipe, a sealing gasket and an anode lead-out device. The anode titanium basket is arranged on the base, installed vertically and provided with two upper and lower electrode lead-out ends. The crystallizer is vertically arranged on the gasket on the base, and is sheathed on the periphery of the anode titanium basket. The upper side of the crystallizer is provided with a sealing hanging basket and a sealing gasket, the sealing hanging basket is provided with a liquid outlet pipe, the sealing hanging basket is provided with a mechanical pressing device, and the sealing hanging basket is compressed and sealed with the upper end of the crystallizer through the sealing gasket. The electroplating cathode is electrically connected to the crystallizer by pressing. The hoisting device is provided with a crane and a workpiece fixture. The washing section includes a washing liquid washing tank, an acid washing tank, a clean water washing tank, and a pure water washing tank.

The invention provides an industrial frequency transformer impact current suppression circuit. The industrial frequency transformer impact current suppression circuit comprises an energy taking unit arranged on a fire wire of a transformer, a rectification unit electrically connected with the output end of the energy taking unit, a constant voltage unit electrically connected with the rectification unit and a current suppression unit electrically connected with the output end of the constant voltage unit, and the current suppression unit is arranged on the fire wire of the transformer and electrically connected with a fuse F1 of the transformer. Most input voltages can be loaded on a current limiting resistor in the power-on process, all the voltages loaded on the current limiting resistor are loaded at the two input ends of the transformer after the power-on process, therefore, large impact currents cannot be generated by the transformer at the starting-up moment, meanwhile, potential differences are prevented from being generated on the current limiting resistor, the fuse can be effectively prevented from being burnt out by the impacts of the large currents, and the fault rate of the fuse of the industrial frequency transformer is lowered. In addition, high cost caused by transformer power increase through the mode of increasing rated currents of the fuse can be avoided.

The invention provides a rapid test device for the oxidation-reduction potential value of an aqueous solution with a water pump, comprising a main body of the test device, an auxiliary stirring mechanism, a water inlet pipe and a water outlet pipe are arranged on the main body of the test device, and the water inlet pipe and the The outlet pipe is connected through a pipe, and electrodes are arranged in the pipe, and the auxiliary stirring mechanism is a water pump, and the water pump is used to stir the measured aqueous solution to promote the rapid flow of the measured aqueous solution, and accelerate the aqueous solution to enter the pipe through the water inlet pipe. Through the process of flowing out of the water outlet pipe, the ions in the aqueous solution are quickly captured by the electrodes, and at the same time, the deionized aqueous solution can be stirred to promote the rapid removal of the aqueous solution ions on the electrodes, reducing the use time interval of the test device . The invention can solve the technical problem of low testing efficiency of existing devices for testing the oxidation-reduction potential value of aqueous solution.

The invention relates to a lead storage battery production method, a lead storage battery, an electrolyte production method and an electrolyte. The lead storage battery production method comprises anelectrolyte production process, wherein during the electrolyte production process, distilled water is treated into small-molecular-group distilled water through water electrifying equipment and is then mixed with pure sulfuric acid. The electrolyte prepared by adopting the method is small in moleculer group number, and after the electrolyte is mixed with the sulfuric acid, a sulfuric acid solutionis more uniform. If the sulfuric acid and the water are mixed more uniformly, the current density distribution of a pole plate is more uniformly when the pole plate is charged and discharged, the potential difference of different parts of the battery is avoided, the polarization of the battery is reduced, meanwhile, the resistance of the pole plate can be reduced, the exothermic reaction of the battery during charging is reduced, and active substances can more favorably participate in charging and discharging, so that the charging acceptability of the storage battery is improved. In addition,a method for increasing the specific energy of the battery through only replacing the electrolyte not only can be accomplished at the design production stage of the battery, but also can be used on amature product and a recycled product.

The invention provides a pipeline anti-corrosion layer and an anti-corrosion pipeline. The pipeline anti-corrosion layer comprises an inner semi-conductive bonding layer, an insulating layer and an outer semi-conductive bonding layer which are sequentially arranged from inside to outside in the radial direction, wherein the inner semi-conductive bonding layer and the outer semi-conductive bondinglayer are formed by a uniform mixture of an adhesive and semi-conductive particles. According to the pipeline anti-corrosion layer and the anti-corrosion pipeline, the anti-corrosion effect of the pipeline can be improved, and particularly, the pipeline anti-corrosion layer and the anti-corrosion pipeline can well protect the pipeline against the damage from stray current.

The disclosure provides an upper electrode assembly, a reaction chamber, and atomic layer deposition equipment. The upper electrode assembly includes an air intake structure and an upper electrode plate. The upper electrode plate is provided with a main pipeline. The air intake structure is used to process The gas is introduced into the reaction chamber from the main pipeline, and the gas inlet structure includes: an insulating component placed on the upper electrode plate; an gas inlet component placed on the insulating component and provided with a first gas inlet pipeline , the first air intake pipeline communicates with the main pipeline through the insulating component, and the inner wall of the first air intake pipeline is electrically isolated from the inner wall of the main pipeline through the insulating component.

The invention relates to alkaline polishing liquid for inhibiting galvanic corrosion of a copper-ruthenium barrier layer and a preparation method of the alkaline polishing liquid. The polishing liquid is prepared from the following components in percentage by weight: 0.3 percent of H2O2, 0.5 percent to 5 percent of beta-hydroxyethylenediamine, 0.1 percent to 0.3 percent of ethylenediaminetetraacetic acid-tetra-tetrahydroxyethylethylenediamine, 0.1 percent to 5 percent of an FA / O type surfactant, 0.8 percent to 1.5 percent of a pH inorganic acid regulator and the balance being de-ionized water; the pH value of the alkaline polishing liquid is 9 to 10; the alkaline polishing liquid is obtained through a mixing manner and an inhibitor does not need to be added; the alkaline polishing liquid is easy to wash and the potential difference between Ru and Cu is effectively overcome; the current density of the galvanic corrosion is reduced and a serious galvanic corrosion problem between the Ru and the Cu is solved; the galvanic corrosion between the Ru and the Cu is inhibited very well.