4results about How to "Wide input voltage range" patented technology

The present invention provides a power supply circuit, an ultrasonic radar and a vehicle. The power supply circuit includes a protection diode, whose input end is connected to a voltage source; a filter detection circuit, one end of which is connected between the voltage source and the protection diode and the other end is grounded, and the filter detection circuit is configured to filter the voltage of the voltage source and detect the voltage amplitude of the voltage source; a voltage stabilizing circuit, which is connected between the output end of the protection diode and the voltage output port of the power supply circuit and is configured to output a stable voltage; and a filter circuit, one end of which is connected between the voltage output port and the voltage stabilizing circuit and the other end is grounded, and is configured to filter the voltage output by the voltage stabilizing circuit. The power supply circuit of the present invention can achieve stable voltage output through the synergistic effect of the protection diode, the filter detection circuit, the voltage stabilizing circuit and the filter circuit, and is suitable for a wider input voltage range.

The application provides a voltage generating circuit and electronic equipment, comprising a bias current module, a response control module, a driving module, a threshold reduction module and an output voltage setting and sampling module, and has simple structure. The preset bias current input by the bias current module can control the transistor to work in a sub-threshold region, so that the circuit has low power consumption. The output voltage setting and sampling module can set the value of the target output voltage, improving the application flexibility of the circuit. The response control module can adjust the output current size generated by the driving module according to the sampling result output by the output voltage setting and sampling module, achieving the purpose of loop control of the current, which not only can ensure that the output voltage stability of the voltage generating circuit is high, but also can improve the dynamic response speed of the circuit. The threshold reduction module can control the driving module to work to provide the output current under the condition that the power supply voltage is lower, so that the voltage generating circuit has a wider input voltage range.

The present invention discloses a staggered parallel high-gain DC-AC inverter for photovoltaic hydrogen production, comprising a first transformer, a second transformer, a staggered parallel circuit, a dual three-port asymmetric boost circuit and an inverter circuit, wherein the primary coil L1 of the first transformer and the primary coil L3 of the second transformer are connected in parallel, and the secondary coil L2 of the first transformer and the secondary coil L4 of the second transformer are connected in series; the staggered parallel circuit is used to convert the photovoltaic power source V in The dual three-port asymmetric boost circuit is used to boost the voltage output by the secondary coils of the first transformer and the second transformer, and output asymmetric bipolar direct current; the inverter circuit is used to convert the direct current output by the dual three-port asymmetric boost circuit into alternating current, and then output it to the hydrogen production grid V g The present invention has high conversion efficiency and small voltage fluctuation.

The application relates to a charging and driving integrated controller of an electric vehicle, which comprises a driving module and a charging module. The driving module is an improved three-phase asymmetric half-bridge circuit, two common-source connected switch tubes are used to replace an A-phase lower tube and a B-phase upper tube, a B-phase motor winding is connected with a manual switch in series, and then connected with the series connection points of switch tubes and diodes in an upper tube bridge arm and a lower tube bridge arm of the B-phase asymmetric half-bridge circuit. The charging module comprises a first capacitor and a rectifier bridge. The two ends of the first capacitor are connected with the series connection points of switch tubes and diodes in a lower tube bridge arm of an A-phase asymmetric half-bridge circuit and the series connection points of switch tubes and diodes in an upper tube bridge arm of a B-phase asymmetric half-bridge circuit respectively. Two output ends of the rectifier bridge are connected with the series connection points of the B-phase motor winding and the manual switch and the positive pole of a storage battery respectively, and the input end of the rectifier bridge is connected with commercial power. The application can realize the functions of motor driving and storage battery charging, does not need to additionally add a charger, can realize step-up and step-down charging, and the externally connected parts are all passive devices, so that the application has excellent stability and reliability.