53results about How to "Change voltage" patented technology

The invention discloses an electrostatic atomizing cooling system for a high heat flux density surface. The system comprises a pipeline system, an electrostatic atomizing device and a controller, wherein the pipeline system is formed by connecting a liquid storing tank, a circulating pump and a heat exchanger through pipelines; the electrostatic atomizing device is that a micron pore array and a high pressure pore plate are mounted in a nozzle; an atomizing chamber is formed between the micron pore array and a nozzle housing; a flow rate controller and a voltage controller are arranged in thecontroller; the circulating pump is used for pumping cooling liquid from the liquid storing tank, and the cooling liquid injected through the electrostatic atomizing device is collected to a bottom plate below an atomizing system, and the bottom plate is connected to a heat exchanger through a liquid returning pipe and is led to the liquid storing tank; a temperature controller for measuring the temperature of a cooled object is mounted on the bottom plate. According to the system, the rotating speed of a circulating pump is controlled, and the flow rate is changed to adapt to the cooling of the high heat flux density base surface; the voltage and the atomizing flow rate can be accurately adjusted based on the temperature; and moreover, a circulating pipeline system is arranged, so that the problems that the atomizing speed and the atomizing capacity are hard to adjust and the cooling liquid cannot be recycled by an existing atomizing cooling device can be solved.

A water level detection system comprises a water containing device, a first slide rheostat, a sensor, a frequency-to-voltage converter, a comparison circuit and an indicating module, where the water containing device comprises a water tank, a floating block floating on the water surface of the water tank and a connecting part connected with the floating block; the first slide rheostat is connected with the connecting part; the sensor is connected with the first slide rheostat; the frequency-to-voltage converter is connected with the sensor; the comparison circuit is connected with the frequency-to-voltage converter; the indicating module is connected with the comparison circuit; the floating block is used for being driven by rising and falling of the water level to drive a slide end of the first slide rheostat to move so as to change the voltage of the sensor; the sensor is used for changing the capacitance according to changes of the voltage so as to change the voltage output by the frequency-to-voltage converter; the comparison circuit is used for comparing the voltage output by the frequency-to-voltage converter with a reference voltage so as to determine whether the indicating module is to be started or not.

A first amplifier amplifies voltage of a first local bit line connected to static memory cells. Precharging circuits for precharging a first global bit line connected to an output of the first amplifier supply a precharging current through both ends of the first global bit line, respectively. Since the precharging current flows through the first global bit line in both directions, electromigration criteria can be made looser than in cases where the current flows in one direction. This makes it possible to avoid a defect which occurs due to electromigration of the first global bit line. Since the first global bit line can be reduced in wiring width, it is possible to minimize the layout area. As a result, the semiconductor memory can be reduced in chip size with a reduction in chip cost.

The invention relates to an anti-drop power plug and socket assembly for a material bending machine and belongs to the technical field of material bending machines. The anti-drop power plug and socketassembly for the material bending machine comprises a plug; the bottom of the plug is fixedly connected with two symmetrical insertion pieces; electromagnets are fixedly connected to the inner wallsof the tops of the insertion pieces; resistors electrically connected with the electromagnets are fixedly connected to the inner walls of the inner sides of the insertion pieces; negative plates electrically connected with the resistors are fixedly connected to the inner walls of the inner sides of the insertion pieces. According to the anti-drop power plug and socket assembly for the material bending machine of the invention, a rubber film and a limiting groove are matched for use; when the plug is pulled vigorously by an external force, the plug can quickly move upwards under the action of external force, large centrifugal force is generated, so that a piston block moves downwards and extrudes an electrorheological fluid; the rubber film is extruded and expanded by the electrorheologicalfluid; and the rubber film is clamped with the limiting groove, so that the effect of limiting the plug from falling off is achieved, electric power stable connection of the material bending machineis guaranteed, and normal work of the material bending machine is guaranteed.

The invention discloses a grid-separated flash memory's low-power read reference circuit, comprising at least a pair of first reference storage unit and second reference storage unit to provide normal storage units of grid-separated flash memory reading reference current, where the first floating grid of the first reference storage unit and the second floating grid of the second reference storage unit are connected to output end of a logic circuit, which can receives at least an external state signal to determine whether the grid-separated flash memory prepares entering into read mode to make the two floating grids switch between an ON state and an OFF state so as to switch on the two reference storage units to make them supply reference current.

The invention discloses a forging and pressing machine. The forging and pressing machine comprises a machine body. Bottom feet are arranged on the two sides of the machine body. First supporting columns are connected to the tops of the bottom feet. An inner cavity of each first supporting column is connected with a second supporting column through a hydraulic oil cylinder. A connecting column is arranged at the top of the machine body. A traction spring and a transformer are arranged in the middle of the connecting column. A permanent magnet is arranged in the middle of the traction spring. The two sides of the permanent magnet are connected with conducting coils. One end of the transformer is connected with the conducting coils. The bottom of the permanent magnet is connected with a forging and pressing hammer through a steel pipe. A forging and pressing platform is arranged at the bottom of the machine body. According to the forging and pressing machine, the supporting columns are driven by lifting of the hydraulic oil cylinders to ascend and descend, so that the forging and pressing machine can forge and press high metal objects high in height, the transformer changes the voltage of the conducting coils, consequently the forging and pressing strength of the forging and pressing hammer is changed, controllability is high, the ideal forging and pressing effects are achieved, the forging and pressing efficiency of the objects is improved, and time is saved.

The invention relates to the technical field of logistics sorting, and discloses an empty package detecting and screening device for logistics packaging. The device comprises a screening table, wherein an electromagnet is fixedly connected to the inner wall of the middle of the screening table; a package unloading hole is arranged in the middle of the screening table; a piezoresistor is fixedly connected to the inner wall of the middle of the screening table; a positive plate is fixedly connected to the inner wall of the middle of the screening table; a negative plate is fixedly connected to the inner wall of the middle of the screening table; a pressing rod is movably connected to the inner wall of the middle of the screening table; an arc-shaped spacer is fixedly connected to the top of the pressing rod; limited blocks are fixedly connected to two sides of the bottom of the arc-shaped spacer; and a reset rod sleeves the pressing rod. According to the empty bag detecting and screening device for logistics packaging, the arc-shaped spacer drives the pressing rod to move, the pressing rod drives a dielectric plate to move, and then the positive plate, the negative plate and the piezoresistor are used in cooperation to achieve the effect of controlling electromagnetism; and due to the fact that the arc-shaped spacer is extruded downwards by the gravity of logistics packages, the pressing rod is driven to move downwards, at the moment, the reset rod is driven to move.

The invention relates to the technical field of computer painting, and discloses a computer painting device capable of preventing plate spraying chromatic aberration. The computer painting device comprises a shell, wherein a sliding groove is formed in the inner wall of the shell; a spraying cavity is movably connected to the inner wall of the shell; a fixed shaft is fixedly connected to the inner wall of the spraying cavity; a roller shaft is movably connected to the inner wall, close to the outer side of the fixed shaft, of the spraying cavity; a magnetic plate I is fixedly connected to the inner wall, close to the outer side of the sliding groove, of the shell; a magnetic plate II is fixedly connected to the inner wall, close to the outer side of the sliding groove, of the shell; and positive poles are fixedly connected to the inner wall of the spraying cavity. According to the computer painting device capable of preventing plate spraying chromatic aberration, through the action of Ampere force, the spraying cavity moving rapidly is slowed down, the situation that the moving speed of the spraying cavity is increased when the external voltage is increased is avoided, the phenomenon that less pigment is sprayed on a plate is prevented, chromatic aberration is avoided, unqualified products and scrapped products are avoided, the production cost of plate spraying is reduced, and the qualified rate of products is improved.

The invention relates to a woodworking lathe control system, which includes a microcontroller, a forward and reverse button detection circuit, a motor and an IGBT drive circuit, and the forward and reverse button detection circuit is connected with the microcontroller; it also includes a bus voltage sampling module, a motor The voltage sampling module and the current sampling module are used to detect the bus voltage, motor voltage and motor current respectively, and transmit the detected values ​​to the microcontroller, and the microcontroller controls the motor action through the IGBT drive circuit. The invention can not only realize the forward and reverse function of the motor, but also effectively prevent the misoperation of the forward and reverse switching of the motor, and at the same time, the voltage and current protection of the system is more comprehensive, realize stepless speed regulation and constant torque output, reduce costs, and facilitate woodworking lathes The cutting operation can improve the work efficiency, precision and operation safety, which has a wide range of popularization significance.

The invention discloses a fume purification device with the synergism of low temperature plasma and solution dehumidification. The fume purification device comprises a base (19), wherein a water pumpI (1), a water pump II (2), a compressor (4), a solution tank I (7) and a solution tank II (3) are arranged on the base (19); the solution tank I (7) and the solution tank II (3) communicate and holda lithium bromide solution; a dehumidification bin (9) is arranged above the solution tank I (7); a regeneration bin (11) is arranged above the solution tank II (3); an inlet of the dehumidification bin (9) is used as a flue gas inlet (20); an outlet of the dehumidification bin (9) is connected with a reaction bin (16); and multiple bobbin type low temperature plasma generators (15) are arranged at the positions, located on the same circumference, between porous plates (17) on two sides in the reaction bin (16). The device adopts a low temperature plasma technology so as to meet the requirements of high air flow and the like of a smoke exhaust ventilator, and adopts a heat pump solution dehumidification treatment device so as to the meet the humidity requirement of the low temperature plasma technology.

The invention discloses an intelligent shower system based on an adjustable fan, which relates to the field of intelligent shower systems; it includes a control device, the control device includes a temperature sensor, a fan control circuit, a single-chip microcomputer and a power supply, and the temperature sensor and the fan control circuit Both are electrically connected with the single-chip electromechanical; the present invention solves the problem that the user's breathing is not smooth due to the long-term use temperature of the bathroom and the excessive water mist in the existing shower system, thereby reducing the comfort of the shower device and achieving the improvement of the shower. The effect of comfort and convenience.

A tool is used to read and write data to the charging line. The tool scans the two-dimensional code of the charging line, analyzes the two-dimensional code, and drives the optocoupler to switch the state according to the analysis result, thereby changing the voltage in the charging line. , so that the charging line writes corresponding data according to the voltage change, so as to achieve the purpose of writing data in the charging line. The tool switches the circuit through the relay. When the charging line finishes writing the data, the charging line controls the electronic switch to close, so that the charging line and the tooling form a path, resulting in a voltage change, thereby judging that the data writing is successful. This solution can solve the problem of reading and writing data when the charging line does not have a data line.