41results about How to "Reduce instantaneous current" patented technology

The invention discloses a high-speed data writing structure and a high-speed data writing method for a phase change memory. The high-speed data writing structure comprises a comparison circuit, a data storage unit with N data bits and a flag bit, (N+1) writing circuits and a control circuit; the comparison circuit is used for comparing data read from an array with data required for being written, and sending a comparison result to the control circuit; the first writing circuit of the (N+1) writing circuits is used for executing a SET / RESET operation on the flag bit of the data storage unit; the N writing circuits are respectively used for executing the SET / RESET operation on the N data bits of the data storage unit; and the control circuit is used for controlling the (N+1) writing circuits to execute different SET / RESET operations on the flag bit and the data bits according to the comparison result. By the adoption of the high-speed data writing structure and the high-speed data writing method, the data writing speed can be increased, and the power consumption is reduced.

The invention discloses a vehicle or machine starting circuit. In application, a controller can output a control signal that controls a transistor to be connected while controlling a controllable switch to remain disconnected, the control signal is transmitted to the transistor via electrical isolation equipment, the transistor is then connected, and under the action of current limiting resistance, capacitors in a main control electric circuit are slowly charged; after the capacitors are fully charged, the controller controls the controllable switch to be closed, the transistor and the currentlimiting resistance are in short circuit, and electricity supply of control electric circuit can be achieved by the controllable switch to meet electricity demand of loads. Therefore, instantaneouscurrent can be reduced when equipment with large capacitance such as a motor driver and a switching power supply are charged to improve electricity performance of the machine by applying the vehicle or machine starting circuit, increasing of the maximum discharge current of a battery or charging by groups is not needed, reliability of the machine can be guaranteed, and cost is lowered. In addition, the invention further discloses a vehicle or machine stating method which has the same effect as above mentioned.

The invention discloses a printing method and device, equipment and a storage medium. The method comprises the steps that printing data of the current line are acquired; the printing data of the current line comprise at least one piece of printing point data, and each piece of printing point data has the printing order M corresponding to the color depth of the printing point data; the preset heating time of the current line is divided into N sub time frames; according to the printing order M of each piece of printing point data, N and the random number distributed to each piece of printing point data, the printing drive pulse sequence of each piece of printing point data is generated, so that the heating time of each piece of printing point data is randomly distributed into the sub time frame, corresponding to the corresponding printing drive pulse sequence, of the N sub time frames; and a corresponding heating element of a printing head is driven to achieve heating according to the printing drive pulse sequences so as to show the data of the current line onto the printing medium again. The situation that all printing point data achieve heating at the same time and the situation that heating pulse distribution consistency is reduced can be avoided, and image points are quite full.

A liquid crystal display. The liquid crystal display having a power device, a display unit array, a scan driver, a selection device, and a current limiting device. In normal operation of the liquid crystal display, according to the operation of the selection device, a voltage signal applied from the power device is directly applied to the scan driver according to the selection device, and the scan driver sequentially outputs scan signals to scan electrodes. During shutdown and power on processes of the liquid crystal display, according to the operation of the selection device, the voltage signal applied from the power device is applied to the scan driver through the current limiting device, limiting the instantaneous current from the power device. Moreover, the scan driver simultaneously outputs all the scan signals to erase charges within all the display units.

The present invention discloses a serial transmission device for reducing instantaneous current including an input terminal for receiving serial data, a coding module coupled to the receiving terminal comprising a plurality of coding units in series for transforming the serial data to a plurality of coding results according to a plurality of coding schemes, and a plurality of output terminals respectively coupled to the plurality of coding units of the coding module for outputting the plurality of coding results.

The invention discloses a standby zero reactive power consumption control circuit in a switching power supply, which comprises a main control switch arranged between a PFC circuit in the switching power supply and an AC power supply network, and is characterized in that the main control switch is switched off under the control of the control circuit when the PFC circuit does not work; the controlcircuit is characterized by further comprising an auxiliary control switch and a current-limiting resistor, the auxiliary control switch and the current-limiting resistor are connected in series and then connected to the two ends of the main control switch in parallel, and the control circuit controls the auxiliary control switch to be closed for set delay time and then controls the main control switch to be closed when the switching power supply is connected to a load. According to the invention, when the switching power supply is connected to an alternating-current power grid, the two ends of the main control switch are connected in parallel with the circuit formed by the series connection of the auxiliary control switch and the current-limiting resistor, and then the auxiliary control switch is controlled to be closed, so that the current in capacitors, inductors and other devices in the PFC is saturated with small current due to the limitation of the current-limiting resistor; andthen the main control switch is closed to reduce the instantaneous current.

The invention discloses an elevator control device. The input terminal of the rectifier is connected with an external AC power supply, and the output DC voltage is sent to the input terminal of the inverter; the inverter converts the DC voltage at the input terminal into an AC voltage to supply power for the motor; The high-voltage end of the inverter is connected to the input end of the inverter; the second contactor is connected between the low-voltage end of the DC converter and the accumulator; the buffer capacitor is arranged between the DC converter and the second contactor, and the two ends of the buffer capacitor are respectively Connect the positive and negative ends of the low-voltage side of the DC converter. The elevator control device of the present invention has low cost.

The invention provides a voltage level conversion circuit and a display panel driving control method. The voltage level conversion circuit is coupled to a plurality of data lines in the display panel through a multiplexer. The voltage level conversion circuit includes a voltage level conversion unit and a control unit. The voltage level conversion unit is coupled to the multiplexer and receives the first voltage level, the second voltage level and the third voltage level respectively, wherein the third voltage level is higher than the second voltage level and the second voltage level above the first voltage level. The control unit is coupled to the voltage level conversion unit for selectively controlling the voltage level conversion unit to output the first voltage level or the second voltage level to the multiplexer according to the voltage level of the timing control signal.

In an electrochemical sensor, the potential difference applied to electrochemical batteries is increased at a certain ratio to reduce the transient current.

The invention discloses an LED control method and system, and a cooking utensil. Wherein, the method includes: obtaining a plurality of LEDs to be controlled, wherein the plurality of LEDs to be controlled need to be controlled simultaneously; controlling the lighting time of the plurality of LEDs to be controlled to be different, so as to reduce the instantaneous maximum current of the circuit. The invention solves the technical problem in the prior art that the instantaneous current of the circuit is relatively large when a plurality of LEDs are simultaneously controlled to be lit.

The invention discloses a Braille convex-concave point control structure, comprising a character post rod, a rod projection, an active board and a control device thereof, and a character post rod motion control device. The rod projection is connected at the lower end of the character post rod which moves up and down through the driving of the character post rod motion control device and the rod projection; the active board is perpendicular to the character post rod, the bottom layer of the active board is provided with a groove; the active board is controlled to translate, and the rod projection enters the groove to drive the character post rod to move up and down. The invention also discloses a progressive full-page driving Braille display, comprising a plurality of square modules each of which is composed of 6 Braille convex-concave point control structures, wherein the structure is arranged in a mode of 3 rows * 2 columns mode; the active boards of the Braille convex-concave point control structures of the square modules in the same line are connected to form an active lath moving together, a waist hole corresponding to the character post rod is arranged on the active lath; in the square modules in the same column, the electromagnetic assemblies of a first Braille convex-concave point control structure, a second Braille convex-concave point control structure and a third Braille convex-concave point control structure in the same column of the square modules are respectively connected to a first driving wire, a second driving wire and a third driving wire which are identical.

The invention discloses a lightning-stroke-resisting protective element. The lightning-stroke-resisting protective element comprises a fuse, two electrodes electrically connected with the two ends of the fuse, and an insulator that is connected with the two electrodes and used for supporting the two electrodes concurrently, wherein at least a metal anti-thunder structure is arranged on the insulator for receiving charge deposition. When lightning stroke voltage appears at the two ends of the lightning-stroke-resisting protective element, the lightning stroke voltage instantly causes air breakdown to enable charges to be deposited on the metal anti-thunder structure so as to greatly lower instantaneous current passing through the protective element fuse in order to prevent the protective element fuse from being fused under the lightning stroke state.

The invention discloses a circuit and an electrical appliance for controlling a high-power load by means of thyristor isolation in a flyback power supply, including a high-frequency transformer, an absorbing circuit, a secondary output circuit, an auxiliary power supply circuit, a drive circuit and a thyristor; the auxiliary power supply The circuit is connected to the high-frequency transformer, and the two ends of the auxiliary power supply circuit are connected to the AC phase line input and the analog ground; the output end of the drive circuit is connected to the G pole of the thyristor, which is used to control the conduction of the thyristor. When the flyback power supply starts, the auxiliary power supply circuit has a continuous DC output; when the drive circuit is turned on, the thyristor has a DC input provided by the auxiliary power supply circuit, the purpose of the present invention The purpose is to provide a circuit that utilizes thyristor isolation to control high-power loads in a flyback power supply. An auxiliary power supply circuit is added to the circuit, which can directly provide trigger current for the conduction of the thyristor, and reduce the voltage loss when the thyristor is turned on. Instantaneous current or instantaneous voltage is conducive to passing the EMC test.

The invention discloses a safety control circuit of baby carriage pedal switch. A five-pin relay achieves on-off of a circuit. The five-pin relay comprises a normally closed switch and a normally open switch. The normally open switch is connected with a positive pole and a negative pole of a circuit. The normally closed switch is connected with the positive pole and the negative pole of a motor. When the control circuit is closed, the normally closed switch is on and the normally open switch is off, and the circuit is conducted. When the control circuit is opened, the normally open switch is on and the circuit is closed and the normally closed switch is off, and the circuit of the motor is conducted. A four-pin relay links the positive pole of the motor with the negative pole of the motor. The four-pin relay comprises a normally closed switch. When the control switch is off, the positive pole of the motor and the negative pole of the motor are in short circuit. The safety control circuit avoids the fusing caused by excessive current in the switch. With the relays, high current is controlled by low current and the switch and an operating circuit are put in different circuits, so the current in the switch is low. The fusing caused by the current in the switch in the operating circuit over rated current is avoided.

The invention mainly relates to a construction method for improving the percent of pass of double-block type concrete sleepers, in particular to a construction method which is applied to a sleeper structure and used for prefabricating and constructing the double-block type concrete sleepers with stopping shoulders. The construction method includes the steps that internal stress of steel bars is eliminated after the steel bars are made to stand still for a certain period of time; by adjusting the arch bending height and increasing welding points, the instantaneous welding current is reduced, the thermal distortion range of the welding points is reduced, and mold cleaning and quality control over and improvement to spraying of release agents are perfected; the impact force generated when the sleeper is demolded is reduced. The construction method has the advantages that the stress generated in the steel bar cold rolling process is effectively removed, the instantaneous welding current is reduced by increasing the welding points, and therefore the thermal distortion range of the welding portions is reduced, it is avoided that the welding points break away from the welding portions, the impact force generated when the sleeper is demolded is reduced, and the quality of the sleeper is guaranteed.

The embodiment of the present invention provides a multi-channel switching circuit and switching method, including: a multiplexing switch matrix, the control terminal of the multiplexing switch matrix is ​​connected to a controller; the multiplexing switch matrix includes a plurality of multiplexing Using a switch, each output channel of each multiplexing switch is respectively connected to a sensor circuit; the common end of each multiplexing switch is respectively connected to the first input end of the signal detection circuit; the output end of the signal detection circuit is connected to the control device, the second input end of the signal detection circuit is connected to the output end of the digital-to-analog converter DAC; the input end of the digital-to-analog converter DAC is connected to the controller; the controller is used to control the digital-to-analog conversion when the multiplexing switch switches the output channel The DAC adjusts the bias voltage applied to the input channel of the multiplexing switch according to a preset gradient function. According to the switching circuit of the embodiment of the present invention, the instantaneous current and voltage generated during channel switching can be reduced, thereby reducing the influence on adjacent channels.