45 results about "Regulated power supply" patented technology

The application discloses a high-duty-cycle control system of a step-down DC-DC switching power supply, which is additionally provided with a high-duty-cycle control system on the basis of a basic structure of the switching power supply and comprises an LDO, a diode D2 for charging a capacitor C1 by the LDO, an error amplifier, a current comparator, an OR gate, a pulse generator, an RS latch and an under-voltage lockout circuit for detecting a voltage VBS between the capacitor C1. The under-voltage lockout circuit detects the voltage VBS between the capacitor C1, when the voltage is insufficient, temporarily turns off a charging switch tube M1, charges the capacitor C1 for providing a stable voltage power supply for a driving circuit during the turn-off of the M1, restores the power supply voltage of the driving circuit, and then reopens the M1, so as to realize the high-duty-cycle conduction of the NMOS type charging switch tube.

The application discloses a panel control method of a stabilized power supply and the stabilized power supply, and the method comprises the following steps: obtaining a signal output by a certain button of a panel of the stabilized power supply, and defining the signal as a reset trigger signal of an extended function; and when the reset trigger signal is received, the following steps are performed: calling a pre-stored extended function identification code, and outputting and controlling a display of the stabilized power supply to sequentially display; displaying any extended function for a T1 time length; receiving and recording other button signals output by the panel within each T1 time; if the reset trigger signal is received within any T1 time, the other button signals and their output forms within the T1 time are recorded as corresponding function trigger signals; if the reset of the extended function is not triggered at present, the extended function identification code is identified according to the function trigger signal, and a pre-stored function instruction is called to execute. The application has the effect of improving the user experience of the stabilized power supply.

This utility model provides a vehicle lamp driving circuit and vehicle lamp assembly, including: a controllable switch, a first resistor and a current shunt circuit; the first end of the controllable switch is connected to a regulated power supply, the second end of the controllable switch is connected to the vehicle lamp, the third end of the controllable switch is grounded through the first resistor, and the current shunt circuit is connected in parallel between the second end and the third end of the controllable switch, which can reduce power consumption and improve optimization efficiency, and is suitable for a high-reliability, low-cost constant current driving architecture for automotive-grade LED lighting.

The application discloses a driving control system of a robot dexterous hand based on Mecanum wheels, which communicates with an upper computer through a data line, the dexterous hand is provided with a rudder that controls the movement and rotation of the finger joints, and a DC motor that controls the rotation of the Mecanum wheels in the finger joints, and the system comprises a single-chip microcomputer, a voltage drop module, a motor driving board and a DC stabilized power supply; one end of the DC stabilized power supply is connected with the voltage drop module in series to supply power to the rudder after voltage reduction, and the other end is connected with the motor driving board to supply power to the DC motor; the single-chip microcomputer and the upper computer use serial communication, the control signals sent by the upper computer are processed and sent to the rudder and the motor driving board, and the motor driving board drives the DC motor according to the signals. The system of the application reduces the complexity and manufacturing cost of the system while maintaining the flexibility of the dexterous hand operation, realizes multi-degree-of-freedom operation on objects, and has potential application fields and expansion prospects.

A sense amplifier circuit includes first, second inputs coupled to first, second memory sensing nodes, respectively. A sensing circuit operates to sense a differential signal between the first, second inputs. A first boosting capacitor has a first terminal coupled to the first input and a second terminal coupled to a switchable node. A second boosting capacitor has a first terminal coupled to the second input and a second terminal coupled to the switchable node. Control circuitry operates, responsive to a bitline boost activation signal having a first value, to couple the first terminals of the first, second boosting capacitors to a regulated supply voltage and drive the switchable node to ground. Responsive to the bitline boost activation signal having a second value, the first terminals of the first, second boosting capacitors are decoupled from the regulated supply voltage and the switchable node is driven to the regulated supply voltage.

This invention discloses a method for preparing EBSD analysis samples of nickel-based resistance alloy foil, comprising: using stainless steel as the cathode and nickel-based resistance alloy foil as the anode, connected to the negative and positive terminals of a constant current and voltage regulated power supply, respectively; immersing the anode and cathode in an electrolytic polishing solution for electrolytic polishing; the raw materials of the electrolytic polishing solution include phosphoric acid, sulfuric acid, hydrochloric acid, hexadecyltrimethylammonium bromide, and water; after completion, removing the nickel-based resistance alloy foil, washing, and drying. The electrolytic polishing solution used in this invention can effectively remove the stress layer on the surface of the foil, resulting in a smooth and clean surface without continuous corrosion pits. It has advantages such as wide availability of materials, simple preparation, low price, and high calibration rate. The electrolytic polishing method of this invention is easy to operate, requires short sample preparation time, has low cost, and stable results, effectively reducing the hardware requirements for foil EBSD sample preparation and facilitating widespread application.

This invention proposes a three-dimensional electrode electrochemical device with descaling function. It is divided into a softening chamber and an oxidation chamber by a partition. The softening chamber contains multiple cylindrical electrode groups. Under the action of an external electric field, the cathode reaction generates a strongly alkaline environment to precipitate scale-forming ions in the water. A gas flushing mechanism and an external programmable DC regulated power supply effectively achieve automatic descaling. The three-dimensional electrode group in the oxidation chamber consists of several anode plates and cathode plates arranged alternately at equal intervals. Insulating baskets filled with particle packing are placed between adjacent electrode plates. Ultrasonic vibrating plates are integrated around the three-dimensional electrode group. A porous sieve plate and aeration pipeline are installed at the bottom of the three-dimensional electrode group. A spray mechanism with rotating nozzles is installed at the top of the oxidation chamber. The combination of the three-dimensional electrode group, ultrasonic assistance, and circulating spray enhances the oxidation efficiency. This invention removes multiple pollutants from water simultaneously and efficiently in a single reactor without the need for external reagents, through a series of electrochemical reactions. It has the advantages of high treatment efficiency, high automation, and small footprint.

This application proposes a power management circuit and electronic device, including a voltage regulation module for regulating the power supply voltage based on the duty cycle of a target PWM signal and outputting the regulated power supply voltage; and a threshold module for configuring a current threshold for overload protection of devices based on the regulated power supply voltage. By controlling the output of target PWM signals with different duty cycles by the control module, the voltage regulation module dynamically adjusts the power supply voltage output by the power module according to the duty cycle of the target PWM signal. This eliminates the limitations of fixed resistor settings, allowing the regulated power supply voltage to be used under different load conditions and operating scenarios. Controlling the duty cycle of the target PWM signal also improves the precision of the voltage regulation module's power supply voltage adjustment, optimizing the efficiency of the power module. Configuring the current threshold based on the regulated power supply voltage gives the current threshold a dynamic adjustment attribute, effectively preventing damage to the power supply and load components of the devices due to overcurrent.

This invention discloses a self-detection circuit for the operating voltage of a NOR memory, relating to the field of NOR memory technology. It includes a memory module that regulates the DC power supplied to the power module and performs data storage and interaction. An operating voltage detection module detects the lowest voltage value of the regulated power supply based on a first and second voltage threshold, thus identifying the lowest operating voltage state of the memory module. A threshold control module, in conjunction with a third and fourth voltage threshold, selects the highest voltage value of the regulated power supply. A voltage comparison module then performs overvoltage or undervoltage detection on the memory module based on the voltage thresholds provided by the threshold control module and the operating voltage detection module. In the event of overvoltage or undervoltage, the module controls a safety protection module to cut off power. This self-detection circuit for the NOR memory improves the intelligence of voltage detection and enhances circuit safety.

Embodiments of the present disclosure provide a short-circuit recovery soft-start circuit and a voltage regulator circuit. The short-circuit recovery soft-start circuit comprises a first constant current source, an energy storage circuit, a first voltage comparison circuit, a short-circuit control circuit, and a pull-down circuit. The first constant current source provides a first constant current to the energy storage circuit via a first node. The energy storage circuit stores charges from the first constant current to generate a soft-start signal. The first voltage comparison circuit has a first input and a second input, and a first offset voltage between the first input and the second input. The first voltage comparison circuit generates a pull-down control signal. The pull-down control signal is at an active level when a voltage of the soft-start signal is greater than a sum of a feedback voltage and the first offset voltage. The short-circuit control circuit causes the pull-down control signal to be at an inactive level when a short-circuit indication signal is at the inactive level, and otherwise does not affect the pull-down control signal. The pull-down circuit pulls down the soft-start signal when the pull-down control signal is at the active level.

The present disclosure relates to fast discharging of power supply nodes. A method and apparatus for fast discharging a power rail is disclosed. A circuit includes a power converter circuit including an inductor coupled between a switching node and a regulated power supply node. A first device is coupled between an input power supply node and the switching node, and a second device is coupled between the switching node and a ground node. The power converter is configured to produce a particular voltage level on the regulated power supply node by controlling the first device and the second device. The circuit further includes a control circuit that, in response to receiving a discharge command, repeatedly activates and deactivates the second device to discharge the regulated power supply node via the switching node and the inductor.

1. Name of the product in this design: Programmable DC Regulated Power Supply. 2. Purpose of this design: for use in programmable DC regulated power supplies. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application discloses a linear voltage stabilizing power supply, which comprises an abnormality control module, a starting module, an adjusting module and an output module. The abnormality control module is connected with a voltage input end, a voltage output end and the starting module respectively; the starting module is connected with a first enable signal end, the voltage input end and a first node respectively; the adjusting module is connected with the voltage input end, a reference voltage end, the first node, a second node and the output module respectively; and the output module is connected with the second node, the voltage input end and the voltage output end respectively. In the linear voltage stabilizing power supply, the abnormality control module detects input voltage and output voltage, and provides a reset signal to the starting module according to the relationship between the input voltage and the output voltage, so as to adjust the first node voltage, the second node voltage and the output voltage. In this way, the overshoot of the voltage output end in the abnormal working state of the linear voltage stabilizing power supply is avoided, and the safety of the voltage output end is protected.

This utility model belongs to the field of power control technology, specifically relating to an online DC power supply switching device. It comprises two circuits: one is a DC regulated power supply circuit, where the DC regulated power supply's operating power source is connected to the DC regulated power supply itself, and the DC regulated power supply is connected to two parallel diodes with opposite polarities, which are then connected to the regulated power supply's output adjustment display screen; the other circuit is a temporary power supply monitoring circuit, where the temporary power supply is connected to the input voltage / current display screen, and the input voltage / current display screen, isolating switch, and output voltage / current display screen are connected in series. This utility model enables safer and more efficient on-site DC power supply switching without power interruption, effectively improving personnel efficiency, equipment / personnel safety, and reducing human error. This ensures the safety of nuclear power plant personnel and the normal operation of equipment, and has significant application value in this field.

This utility model relates to the field of mine ventilation monitoring systems, and discloses an intelligent mine local ventilation fan monitoring system, including an above-ground section and an underground section. The above-ground section includes a printer, a normal industrial control host, a backup industrial control host, a 2KVh uninterruptible power supply, a surge protector, a mine intrinsically safe network switch, and a mine explosion-proof and intrinsically safe DC regulated power supply. The underground section includes a mine explosion-proof and intrinsically safe fan monitoring substation one, a mine explosion-proof and intrinsically safe fan monitoring substation two, an explosion-proof and intrinsically safe dual-power frequency converter for the ventilation fans, a data detection module, and multiple ventilation fans. The data detection module includes a coal mine low-concentration methane sensor, a mine temperature sensor, a mine carbon monoxide sensor, a mine intrinsically safe vibration sensor, and a mine wind speed sensor. In this utility model, the ventilation fans are intelligently started and stopped according to the actual conditions in the mine, resulting in high efficiency, energy saving, and consistently good ventilation.

This utility model discloses a multi-stage regulated power supply system with wide input voltage, relating to the field of vehicle power supply technology. It includes: an input protection unit, whose input terminal is connected to the vehicle power supply to prevent reverse polarity and outputting an input voltage with a range of 8V-60V; a high-voltage regulator unit, whose input terminal is connected to the output terminal of the input protection unit to convert the input voltage to a 12V output; a medium-voltage regulator unit, whose input terminal is connected to the output terminal of the high-voltage regulator unit to convert the 12V voltage to a 5V output; and a low-voltage regulator unit, whose input terminal is connected to the output terminal of the medium-voltage regulator unit to convert the 5V voltage to a 3.3V output. This system helps solve the problem that existing technologies cannot simultaneously output multiple standard voltages.

This invention discloses a control circuit for an ozone module, including a power input module, an FG electronically regulated signal terminal, a capacitor E1, a transistor Q1, a field-effect transistor U1, and a common-mode inductor L1. One end of capacitor E1 is electrically connected to one end of the electronically regulated power supply terminal, and the other end of capacitor E1 is electrically connected to one end of the FG electronically regulated signal terminal. The emitter of transistor Q1 is electrically connected to the end of capacitor E1 connected to the electronically regulated power supply terminal. The gate of field-effect transistor U1 is electrically connected to the collector of transistor Q1. Common-mode inductor L1 has pins 1, 2, 3, and 4, and pin 1 of common-mode inductor L1 is electrically connected to the source of field-effect transistor U1. This invention designs a control circuit for an ozone module, which solves the problem of ozone generation even when the purifier is not placed in water, by using a high-stability anti-interference function module and a control ozone load switch; it reduces resource waste and ensures safe use.

This invention discloses a piezoelectric ceramic differential charge pump drive circuit and control method, relating to the field of precision drive control for piezoelectric ceramics. A single-pole double-throw switch is connected to each end of a DC regulated power supply, providing switchable positive and negative reference voltages. A charge pump capacitor is also connected to a single-pole double-throw switch, switching between the DC regulated power supply and two high-voltage operational amplifiers. The charge pump capacitor is charged from the DC regulated power supply and then injects equal and opposite charges into the two piezoelectric ceramics connected to the high-voltage operational amplifiers, thus realizing the differential charge pump drive and control. This invention simplifies the charge drive circuit of a piezoelectric bicrystalline wafer, provides equal differential charges to the two piezoelectric ceramics, and significantly improves the control accuracy of the bending displacement of the piezoelectric bicrystalline wafer using charge drive technology.

This utility model relates to a DC regulated power supply, comprising: a power supply body, a fixing frame, and a partition block; the fixing frame is disposed on the upper surface of the power supply body, and a partition block is snapped into it, the partition block being used to divide the fixing frame. This utility model, by setting up the power supply body, hollow frame, and insulating partition, allows alligator clips to be directly clamped onto the outside of an insulating horizontal plate through the cooperation between the insulating partition and the hollow frame. Furthermore, the insulating partition separates multiple alligator clips, thus preventing electric shock or short circuits when the alligator clips are placed on a workbench. The insulating partition facilitates installation inside the hollow frame. Through the cooperation between the snap-fit ​​plate and the snap-fit ​​protrusion, the snap-fit ​​plate elastically deforms and returns to its original shape during the insertion of the horizontal plate into the snap-fit ​​interface, achieving the effect of easy disassembly and installation of the insulating partition.

The utility model provides a kind of receiving and inspecting goods system internet of things terminal controller, including control unit, signal acquisition unit, execution drive unit, communication expansion unit and power management unit, control unit includes microprocessor and the EEPROM circuit of two-way communication with it;Execution drive unit includes multiple groups of relay circuit;Communication expansion unit includes isolated network circuit and UART RS232 circuit;Power management unit includes external 12V power interface circuit, protection circuit and internal voltage stabilizing power supply circuit.The utility model realizes the electrical isolation and level matching of high and low voltage signals in industrial field, with strong anti-interference ability, rich interface, safe and reliable characteristics, suitable for the field control of internet of things receiving and inspecting goods system.

This invention discloses a low-noise, stable acquisition and amplification circuit for weak photoelectric signals. The circuit includes: a photodetector module, a transimpedance amplifier module, a power frequency notch filter and low-pass active filter module, an output buffer conditioning module, and a regulated power supply module. The photodetector module reduces the influence of junction capacitance and suppresses parasitic oscillations through parasitic suppression capacitors. The transimpedance amplifier module achieves low-noise current-to-voltage conversion of weak photocurrent. The power frequency notch filter and low-pass active filter module filters out 50Hz power frequency interference and high-frequency thermal noise. The output buffer conditioning module achieves impedance matching to ensure distortion-free signal output. The regulated power supply module provides low-ripple positive and negative power supplies and a precise reference voltage through positive voltage regulators, negative voltage regulators, and a voltage reference source, effectively suppressing power supply noise and DC drift. This invention improves the signal-to-noise ratio and acquisition stability of weak optical signals through precise port connections and coordinated operation of each module.

This utility model discloses a low-power lossless DC-DC regulated power supply circuit, belonging to the field of DC-DC regulated power supply technology. The circuit includes an input filter circuit, a switching converter circuit, a feedback regulation circuit, an output voltage regulator circuit, and a load protection circuit. The feedback regulation circuit improves voltage regulation accuracy through an error amplifier and an adjustable potentiometer, while the switching converter circuit optimizes energy conversion efficiency and reduces losses. This application can adjust the output voltage stability in real time, enhance dynamic response capability, ensure voltage stability during load changes, and significantly improve conversion efficiency, reduce power consumption, and improve thermal management performance, making it suitable for high-precision, low-power scenarios.

This utility model discloses a mine-use explosion-proof and intrinsically safe DC regulated power supply, including: an explosion-proof power supply box and an AC-DC module, a three-channel DC power supply module, a dual power supply switching module, a dual overvoltage and overcurrent protection module, a control and monitoring module, and a backup battery installed inside it. The AC-DC module is connected to the input terminal of the main power supply. The dual power supply switching module is used for switching between the main power supply and the backup battery. The control and monitoring module monitors the voltage and current output of each DC power supply module, the main power supply, and the backup battery. When the voltage or current output of a certain DC power supply module exceeds a threshold, the corresponding dual overvoltage and overcurrent protection module is triggered to activate the protection action. This mine-use explosion-proof and intrinsically safe DC regulated power supply has multiple protection mechanisms at the output terminal to cope with transient interference or load changes, ensuring stable power output while preventing safety accidents. When the main power supply is depleted, it can automatically switch to the backup battery to continue supplying power to the load, allowing the load to operate normally.

The utility model discloses a railway LED testing device: the shell has integrated the test unit, and the test unit includes the power input terminal for accessing alternating current, the alternating voltage stabilizing power supply for converting the alternating current input into stable alternating current, the voltage regulator for voltage regulation to alternating voltage stabilizing power supply output voltage, the railway signal point light unit for converting the voltage regulator output voltage into three gears voltage, the test lamp holder for installing LED lamp, the input side connection power input terminal of alternating voltage stabilizing power supply, and the output side of voltage stabilizing power supply is connected to the input end of railway signal point light unit through voltage regulator, and the output end of railway signal point light unit is connected to the main filament pin, the vice filament pin, the public pin of test lamp holder respectively, and the different models and the factory of the LED lamp to be tested can be tested, and the performance index of the LED lamp to be tested under the different voltage state of railway signal point light unit once and twice can be detected.

The utility model discloses a kind of matrix board card systems for automobile electronic testing, comprising: matrix board card, by MCU control chip, high-frequency signal relay, fast-fuse fuse, CAN transceiver circuit and ethernet transceiver circuit composition;Chassis, inside is equipped with backplane connector, for fixed matrix board card and provide power supply and signal transmission channel;Power module, through the backplane connector to the matrix board card provides DC regulated power supply;Communication interface, including CAN interface and ethernet interface.Matrix board card cooperates chassis and uses different board card, can satisfy different automobile test item needs, wherein matrix board card uses high-frequency signal relay, bus series resistance and special connector collaborative work, solve the problem of high-frequency signal attenuation and waveform distortion caused by traditional relay card due to insufficient bandwidth, make the accuracy of test data be promoted, to meet the core demand of precise signal acquisition in automobile electronic testing.

The utility model discloses a kind of mine direct-current stabilized power supply, it is related to power supply equipment technical field;Including shell, the rear side inner wall of shell is equipped with power supply mainboard by mounting mechanism, the rear side wall of shell is all provided with display mechanism on the left and right side of power supply mainboard, display mechanism includes display screen, pilot lamp, sealing washer and cover, the left and right side of shell is all fixedly installed with wiring mechanism, wiring mechanism includes threading pipe, rubber seal sleeve, baffle, metal washer and compression nut, the front side of shell is equipped with bottom cover by interior hexagon screw, the lower side position of the right wall of shell is provided with sealing wire buckle;The utility model increases digital display monitoring function, realizes "explosion-proof+monitoring" integration, solve the defect that traditional pouring seal power supply function is single, using local digital display instead of wireless transmission, adapt to downhole signal shielding environment, and need not additional communication module cost, two cavity local seal glue technology saves material pouring and is reliable.

1. Name of the product in this design: Intrinsically Safe Stabilized Power Supply for Mining. 2. Purpose of this design: A voltage stabilizer box that provides intrinsically safe power to intrinsically safe equipment in underground coal mines and has a backup power function. Suitable for use with various instruments or equipment that require intrinsically safe power supply. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The present disclosure relates to a radio frequency signal verification system, which automatically triggers a key to emit a radio frequency signal, analyzes and verifies the radio frequency signal, and automatically records the verification result, without human triggering the key, saving manpower and material resources, and the verification result is reliable. The system comprises: a PEPS module, an intelligent key and a client in communication connection with the PEPS module, and a voltage stabilizing power supply providing power supply for the PEPS module; the PEPS module is used to drive the intelligent key to emit a radio frequency signal in response to the control instruction of the client, analyze the radio frequency signal emitted by the intelligent key, and feed back the analysis result to the client; the client is used to verify the analysis result, and display the analysis result and the verification result.

The application relates to a high-voltage and high-power test system for a converter valve power supply, which comprises an adjustable AC isolation voltage stabilizer, a multiple voltage rectification filter circuit, a measured high-voltage power supply, a measurement assembly and an upper computer, the adjustable AC isolation voltage stabilizer is used for providing adjustable power frequency AC voltage, the input end of the multiple voltage rectification filter circuit is electrically connected with the adjustable AC isolation voltage stabilizer, the multiple voltage rectification filter circuit is used for converting AC voltage into DC high voltage with different multiples, the input end of the measured high-voltage power supply is electrically connected with the output end of the multiple voltage rectification filter circuit, the measured high-voltage power supply has multiple outputs, the input end of the measurement assembly is electrically connected with the measured high-voltage power supply, the measurement assembly is used for collecting multiple output voltages, the upper computer is electrically connected with the measurement assembly and the adjustable AC isolation voltage stabilizer respectively, the upper computer is used for adjusting input voltage and collecting test data, and the multiple voltage rectification filter circuit uses multiple 450V / 560uF parallel capacitors, so that the required current impact can be coped with.

The application relates to the technical field of transportation and discloses a long-distance power supply digital quick switching AC220V stabilized power supply, which comprises a box body, a box door is arranged on the front face of the box body, a power supply transmission module, a step-down transformer module and a digital control unit are arranged in the box body; the power supply transmission module is used for transmitting power along a highway roadbed at 800V alternating voltage, and the transmission distance can reach 25 kilometers; the step-down transformer module adopts an annular structure and is provided with 24 taps in the secondary part and is used for reducing 800V alternating voltage to AC220V. The long-distance power supply digital quick switching AC220V stabilized power supply adopts 800V alternating voltage transmission, avoids 10kV high-voltage auxiliary equipment investment and low-voltage large-section cable loss, cooperates with a customized multi-tap annular transformer with 24 taps to realize 3% step adjustment, reduces line loss, reduces station end investment cost compared with a traditional 10kV power supply scheme, and solves the problem that low-voltage transmission distance is limited.