4results about How to "Stable working voltage" patented technology

The application relates to an intensive transient disturbance regulation circuit, which comprises a three-phase bridge arm unit, a common DC side unit and a zero sequence bridge arm unit; the three-phase bridge arm unit is connected with each phase power supply branch of a three-phase power grid, a common neutral end of the common DC side unit and an input end of the zero sequence bridge arm unit, and an output end of the zero sequence bridge arm unit is grounded; the zero sequence bridge arm unit is used for generating a first current for offsetting a fault zero sequence component based on a power grid voltage, a power grid current and a common neutral end voltage of the three-phase power grid; the three-phase bridge arm unit is used for determining a three-phase reactive compensation current based on the common neutral end voltage and the first current input by the zero sequence bridge arm unit, and sending the three-phase reactive compensation current to a corresponding phase distribution line of the three-phase power grid; and the common DC side unit is used for providing common DC voltage support for the three-phase bridge arm unit and the zero sequence bridge arm unit. The zero sequence disturbance of the distribution network can be inhibited, and the voltage deviation and power fluctuation problems caused by the power grid transient disturbance can be weakened.

This application relates to the technical field of vehicle signal testing, and in particular to a signal conditioning circuit, conditioning device, and testing system. The circuit includes a first processing module, a first protection module, a second processing module, a second protection module, a power supply module, and a third protection module. Specifically: the first processing module modulates the initial PWM signal output from the NI chassis into a target PWM signal that conforms to the voltage acquisition range of the ECU; the first protection module provides overvoltage protection for the first processing module; the second processing module converts the control signal output from the ECU into a target control signal that conforms to the voltage acquisition range of the NI chassis; the second protection module provides overcurrent protection for the second processing module; the power supply module provides the corresponding operating voltages for the first and second processing modules; and the third protection module provides overvoltage and overcurrent protection for the power supply module. The solution of this application can improve the stability of digital signals during HIL testing.

This application discloses a supercharging power supply circuit and method for vehicles, belonging to the field of circuit technology. The battery pack module includes a low-voltage battery pack and a high-voltage battery pack, with rated voltages of a first voltage value and a second voltage value. When the first contactor group in the contactor module is open and the second contactor group is closed, branches formed by connecting each low-voltage battery pack in series with one high-voltage battery pack are connected in parallel to form a supercharging battery pack with a rated voltage equal to the sum of the first and second voltage values, entering supercharging mode. When the first contactor group is closed and the second contactor group is open, branches formed by connecting all low-voltage battery packs in series are connected in parallel with each high-voltage battery pack to form a normal battery pack with a rated voltage equal to the second voltage value, entering normal charging or power supply mode. In supercharging mode, the step-down module reduces the voltage of the supercharging battery pack to the second voltage value to supply power to high-voltage electrical appliances. This application enables the use of high-voltage electrical appliances when supporting supercharging, ensuring charging safety.

The utility model provides a kind of low-temperature microwave sterilization control circuit and device, it is related to the technical field of microwave sterilization, including power supply circuit, trigger circuit, control switch circuit, signal amplification circuit, signal indicating circuit and protection circuit;The output end of power supply circuit is connected respectively the input end of trigger circuit and the input end of control switch circuit, the output end of trigger circuit connects the input end of power supply circuit, the output end of control switch circuit connects the input end of signal amplification circuit, the output end of signal amplification circuit connects the input end of signal indicating circuit, the output end of signal indicating circuit connects the input end of protection circuit.The utility model can reduce equipment energy consumption, simplify operation, stable signal, realize heating uniform, real-time monitoring, high safety.