14results about How to "Stable current" patented technology

An anti-fuse memory cell, an anti-fuse memory array and a memory, the anti-fuse memory cell comprising: an anti-fuse structure having a first end and a second end; the selection transistor comprises a drain electrode and a source electrode, and one of the drain electrode and the source electrode is coupled with the first end of the anti-fuse structure; and the anode of the voltage stabilizing diode is coupled with the other one of the drain electrode and the source electrode. According to the embodiment of the invention, the voltage stabilizing diode is additionally arranged in the anti-fuse memory cell and is connected with the selection transistor in series, the voltage stabilizing diode can provide stable voltage for the selection transistor, interference caused by current fluctuation can be resisted, correspondingly, the selection transistor can provide stable current for the anti-fuse structure, and the anti-fuse memory cell is more stable in performance. Therefore, the programming reliability of the anti-fuse structure is improved.

The utility model relates to a mercury lamp power supply device for a tester. The mercury lamp power supply device comprises an electronic trigger, a ballast and a relay, a first end of a normally open contact of the relay is electrically connected with one end of the power supply end, a second end of the normally open contact of the relay is electrically connected with a first end of the ballast, and a coil of the relay is electrically connected with the tester control end; the second end of the ballast is electrically connected with the first end of the load; the first end of the electronic trigger is connected to a line between the second end of the ballast and the first end of the load, the second end of the electronic trigger is electrically connected with the first end of the load, and the second end of the load is electrically connected with the other end of the power supply end. According to the mercury lamp power supply device for the tester, the overall structure is simple, maintenance is easy, the success rate of lightening the mercury lamp is high, and voltage and current provided for the mercury lamp after lightening are stable.

A rotating electrical machine control device shifts a control system to synchronous five-pulse control when an operating point crosses a second boundary K22 from a state in which asynchronous pulse-width modulation control is being executed, and shifts the control system to the asynchronous pulse-width modulation control when the operating point crosses a first boundary K21 from a state in which the synchronous five-pulse control is being executed. The first boundary K21 is set such that the number of switching pulses per unit rotational speed by the synchronous five-pulse control immediately before the operating point crosses the first boundary K21 is smaller than the number of the switching pulses per unit rotational speed by the asynchronous pulse-width modulation control immediately after the operating point crosses the first boundary K21.

The utility model provides a test system and device for a vehicle-mounted refrigerator, and relates to the technical field of testing, and the test system comprises a power module, a communication module, a control module and a switch module. The power module is connected with the battery; the communication module is connected with the power supply module and the vehicle-mounted refrigerator; the control module is connected with the power module and the communication module; the switch module is connected with the power supply module and the control module, when the switch module works in a first conduction state, the control module controls the vehicle-mounted refrigerator to be switched to a refrigeration test mode through the communication module, and when the switch module works in a second conduction state, the control module controls the vehicle-mounted refrigerator to be switched to a heating test mode through the communication module. According to the test system, the test mode of the vehicle-mounted refrigerator can be correspondingly and automatically changed by changing the conduction state of the switch module, and the switching flexibility is high. And the professional demand is relatively low, the operation is simple, the cost is relatively low, and batch testing of the vehicle-mounted refrigerator is facilitated.

This utility model relates to the field of door lock technology and discloses an intelligent door lock. The intelligent door lock includes a lock body, an electrical device, and an emergency power generation device. The electrical device is installed on the lock body. The emergency power generation device includes a magnet, a metal component, an emergency power storage module, and a drive module. The magnet is installed on the lock body; the metal component is located in the magnetic field of the magnet; the emergency power storage module is installed on the lock body; the input end of the emergency power storage module is electrically connected to the metal component; the output end of the emergency power storage module is electrically connected to the electrical device; the drive module is installed on the lock body; the drive module is connected to the metal component and is used to drive the metal component to reciprocate along a first direction, so that the metal component charges the emergency power storage module; the first direction is not parallel to the direction of the magnetic field lines of the magnet. The emergency power storage module can provide a stable current to the electrical device, improving the stability and reliability of the power supply, and solving the problem of poor reliability of emergency unlocking schemes in existing intelligent door locks.

The application provides a kind of lighting device driving circuit and clothes processing equipment, belong to the technical field of household appliance control.Circuit includes control module, switch control module and voltage stabilizing module.Control module sends control signal.Switch control module is connected with lighting device.Switch control module is connected with control module.Switch control module controls the circuit conduction between switch control module and lighting device according to control signal.Voltage stabilizing module is connected with switch control module.Under the condition that the circuit between switch control module and lighting device is conducted, voltage stabilizing module can stabilize the voltage of switch control module, to stabilize the current between switch control module and lighting device.Through the circuit provided by the application, it is ensured that the current flowing through the lighting device remains unchanged, so that the luminous intensity of the lighting device is stable, the stability of the luminous intensity is improved, and the problem of poor luminous intensity stability of the lighting device in the traditional circuit is solved.

The purpose of the present invention, relating to lanthanide boride, which is known as a low work function material, is to provide a novel low work function material with low chemical reactivity, in particular a low work function material of which the material surface, after being exposed to atmospheric gases, can be cleaned at a heating temperature lower than in the prior art. The present invention is a laminate containing a lanthanide boride film formed on a substrate, the surface of said film being covered by a thin film, wherein the thin film is a monatomic layer of a hexagonal boron nitride thin film.

This utility model discloses an HD digital projection module headlight, comprising: a housing; at least one HD module installed inside the housing, the housing having a light-transmitting portion for cooperating with the HD module; a module mounting bracket connected to the HD module; and a dimming structure connecting the module mounting bracket and the housing, the dimming structure controlling the distance from the mounting bracket to the light-transmitting portion to adjust the light emission effect. The dimming structure includes a base plate and an adjusting screw, the base plate having an adjusting channel, at least a portion of the sidewall of the adjusting channel having an adjusting groove, the thread of the adjusting screw engaging with the adjusting groove, and the base plate having a connecting portion cooperating with the module mounting bracket. This utility model, through its dimming structure, enables adjustment of the HD module, increases user interactivity, enhances personalized settings, achieves precise control, and increases the sense of technology and fun.

The invention relates to the technical field of electrochemical catalysis and carbon dioxide conversion, in particular to a silicon carbide loaded Ag30Cu14 nanocluster catalyst and application thereof in electrocatalytic CO2 reduction. The silicon carbide loaded Ag30Cu14 nanocluster catalyst is an Ag30Cu14 bimetallic nanocluster with precise atoms, the chemical formula is Ag30Cu14 (TPP) 4 (SR) 28, the silicon carbide loaded Ag30Cu14 nanocluster catalyst has an irregular structure of an Ag27 core and an Ag3Cu14 shell, and the silicon carbide is loaded with the Ag30Cu14 nanocluster; the silicon carbide-loaded Ag30Cu14 nanocluster catalyst prepared by the preparation method disclosed by the invention is a loaded CO2RR catalyst which is low in cost and accurate in atom structure, and the product selectivity can be regulated and controlled through post-treatment.

The invention discloses a hydrogen production circuit for a PEM electrolytic cell and an online impedance detection method of the hydrogen production circuit, and aims to overcome the defect that an existing electrolytic cell impedance detection method needs to be shut down. The circuit comprises a first power supply circuit as a current source and a second power supply circuit as a voltage source, the first power supply circuit is connected in series with a first end of a PEM load, and the second power supply circuit is connected in series with a second end of the PEM load. One of the first power supply circuit or the second power supply circuit is injected with excitation harmonic waves, voltage and current signal acquisition circuits are arranged at the two ends of the PEM load, and the excitation harmonic waves are generated through a control module. The aging state of the electrolytic cell can be detected online, so that performance reduction of the electrolytic cell can be found in time.

The application discloses an energy storage system power distribution strategy based on an error function, mainly comprising an event-triggered dynamic consistency algorithm module, an error function-based SOC equalization algorithm module, a virtual voltage drop module, a voltage compensation module and a voltage and current double-loop control module. The event-triggered dynamic consistency algorithm module is added, so that the system changes from "timed communication" to "on-demand communication", while reducing the communication burden, the error function-based SOC equalization algorithm module can dynamically divide the output current of each energy storage unit according to the real-time deviation of the state of charge of each energy storage unit and the average state of charge of the energy storage system, thereby improving the accuracy of the equal division of the output current between energy storage units with different capacities. In addition, the virtual voltage drop module and the voltage compensation module ensure that the voltage is stable within the rated range.

This invention relates to the field of lubrication system technology and proposes an intelligent lubrication system for dock gantry cranes. The system includes an oil pump control circuit comprising an operational amplifier U1, a NAND gate U2, a NOT gate U3, switching transistors Q1 and Q2, and a resistor R4. The non-inverting input of operational amplifier U1 is connected to a reference voltage Vref. The output of operational amplifier U1 is connected to the first input of NAND gate U2. The input of NOT gate U3 is connected to the main control unit, and the input of NOT gate U3 is connected to the second input of NAND gate U2. The output of NAND gate U2 is connected to the control terminal of switching transistor Q1, and the output of NOT gate U3 is connected to the control terminal of switching transistor Q2. The first terminal of switching transistor Q1 is connected to a 24V power supply, and the second terminal of switching transistor Q1 is connected to the first terminal of the oil pump. The first terminal of switching transistor Q2 is connected to the second terminal of the oil pump, and the second terminal of switching transistor Q2 is grounded through resistor R4. The second terminal of switching transistor Q2 is connected to the inverting input of operational amplifier U1. This technical solution solves the problem of unstable power supply operation of the oil pump in related technologies.

This invention discloses an anti-interference communication device and method. A constant current circuit is set between the master and slave devices. This circuit converts voltage or digital signals into a constant current signal, which is transmitted between the master and slave devices via a communication line. Utilizing constant current for transmission between the master and slave devices overcomes the problems of poor anti-interference capability, impedance mismatch, and signal instability in existing data transmission methods, thus reducing interference in the communication circuit. The current control scheme proposed in this invention uses inexpensive components, and the effective stabilization of the current in the communication circuit through circuit structure construction achieves stable signal transmission between the master and slave devices.

The utility model belongs to the technical field of batteries, and discloses a battery cell group and a battery structure, the battery cell group comprises a plurality of battery cell bodies, a connecting piece, an adjusting piece and a heat insulation assembly, the connecting piece is connected with the plurality of battery cell bodies and is used for connecting the plurality of battery cell bodies in series or in parallel; each adjusting part is arranged between the two adjacent battery cell bodies and is used for adjusting the distance between the two adjacent battery cell bodies; the heat insulation assembly is connected with the adjusting piece. Therefore, under the action of the connecting piece, the plurality of battery cell bodies are mutually connected, and the distance between the adjacent battery cells can be adjusted by adjusting the adjusting piece, so that the specification of the whole battery cell group is adjusted, the battery cells with different specifications can adapt to shells with the same specification after being assembled, the battery assembly flexibility is improved, the production cost is reduced, and the production efficiency is improved; and the heat insulation assembly enables heat accumulation not to be easily generated between the adjacent battery cells, so that potential safety hazards are avoided.