39results about How to "The voltage value is stable" patented technology

A converter circuit is specified in which, in order to avoid losses to the greatest possible extent, a first inductance is connected in series into the connection of a DC voltage source of the converter circuit to a first switch of the converter circuit, and in which, moreover, a second inductance is connected in series into the connection of a second switch of a switching group of the converter circuit to the junction point between a second capacitive energy store and a second unidirectional non-drivable power semiconductor switch of the switching group. Two further alternative converter circuits and also a method for operating the converter circuit are furthermore specified.

A current protection circuit for a high voltage system includes: a power supply module to supply power to a load through a high voltage bus and a low voltage bus; a detection module connected to the high voltage bus and used to detect a value of current flowing through the high voltage bus; a signal processing module electrically connected to the detection module and used to amplify the current flowing through the high voltage bus; and a control module electrically connected to the signal processing module, the power supply module, and the load, and used to disconnect the load from the power supply module or perform current limiting for the load when the value of the amplified current exceeds a preset threshold.

The invention relates to the field of generators, and discloses a friction nanometer generator based on fiber sliding and a preparation method thereof. The structure of the fabric triboelectric flag includes: a main TENG and a sub-TENG, through the method of charge excitation, the charges generated by the sub-TENG are transferred to the main TENG to obtain high power density. The invention selects small-diameter and light-weight fibers as the textile material of the triboelectric flag, which not only effectively increases the contact area of ​​the friction material, but also maximizes the stretching and friction of the triboelectric flag under the action of wind force. The beneficial effect of the present invention is that the generator can still maintain its inherent performance under the action of various bending, torsion and stretching forces. Improve power generation performance. Under the same area and wind conditions, the maximum voltage and current generated are about 160V and 90μA respectively, and the current and voltage values ​​are relatively stable, which makes it have a wide range of applications.

The invention discloses a multi-energy-supply hydraulic drive dung removal device and method. The device comprises a factory and is characterized in that solar panels are arranged on the top of the factory, a water tower is installed on the side face of the factory, a water storage pond is installed in front of the water tower, the side face, adjacent to the side face where the water tower is located, of the factory is provided with a water tank, a dung hopper, a pulley block and a rail, the water tower is connected with the water storage tank through a water pipe, and the water tank is connected with the water storage pond through a water pipe. Solar energy and piezoelectric energy are reasonably used and combined with hydraulic driving, the device and method aim to achieve industrial centralized and efficient dung treatment, energy conservation and environment protection, the production efficiency is improved, and economic benefits are increased.

The invention discloses a high-frequency digital power circuit which comprises an EMI filtering rectifier, an optical coupler drive unit, a microcontroller, a voltage regulation circuit and a switching circuit, wherein the EMI filtering rectifier, the voltage regulation circuit, the microcontroller and the optical coupler drive unit are successively connected, one end of the switching circuit is connected with the voltage regulation circuit, and the other end of the switching circuit is connected with the optical coupler drive unit. According to the high-frequency digital power circuit provided by the invention, output signals are stable in the voltage value, and damage on power supply caused by instable voltage signals in the prior art is avoided.

The invention discloses a vehicle-mounted charging device, which belongs to the technical field of charging and power supply. The vehicle-mounted charging device comprises a filter circuit, a rectifier circuit, a power factor compensation circuit, a DC / DC conversion circuit and a vehicle-mounted energy storage device, wherein the DC / DC conversion circuit comprises a switch circuit, a DC / DC control circuit connected with the control end of the switch circuit and a second feedback circuit connected with the output end of the switch circuit; the output end of the second feedback circuit is connected with the input end of the DC / DC control circuit; the switch circuit comprises a switch K2, an inductor L2 and a capacitor C2; the switch K2 and the inductor L2 are serially connected to serve as the output end of the switch circuit; and one end of the capacitor C2 is connected with the output end and the other end is grounded. Technical problems of large electromagnetic interference and much energy loss as the prior vehicle-mounted charging device commonly uses a transformer are solved, the switch circuit is adopted for outputting charging voltage, energy loss is low, and the charging efficiency is high.

The invention discloses a nitrogen and phosphorus removal electricity generator, and belongs to the technical field of sewage treatment. A traditional A2 / O technology and a microbial fuel cell are coupled. The nitrogen and phosphorus removal electricity generator comprises a water tank, an anaerobic pond, an oxygen shortage pond, an aerobiotic pond and a settling pond, wherein the water tank, the anaerobic pond, the oxygen shortage pond, the aerobiotic pond and the settling pond are sequentially connected. The anaerobic pond and the aerobiotic pond are separated through a proton exchange membrane, the anaerobic pond serves as an anode chamber of a microbial fuel cell, the aerobiotic pond serves as a cathode chamber of the microbial fuel cell, the anode chamber and the cathode chamber are respectively and externally connected with a resistance box through a carbon felt electrode and a copper wire respectively, and a closed loop is formed; the oxygen shortage pond is connected with the aerobiotic pond through a mixed liquid refluxing pipe, the anaerobic pond is connected with the settling pond through a refluxing sludge pipe, and the settling pond is further provided with a water outlet and a sludge discharging opening. Electric energy is generated while sewage treatment, and the A2 / O technology and the microbial fuel cell technology are coupled. According to the method, domestic sewage is treated through the A2 / O technology, the concentration of COD in sewage, the concentration of TP in the sewage and the concentration of TN in the sewage are reduced, a stable voltage value is generated while water body purifying, pollutants in the sewage are effectively reduced, and electric energy is generated.

The present disclosure provides a working method of an electron source, the electron source includes at least one emission point fixed on the needle tip, the emission point is a reaction product formed by metal atoms on the surface of the needle point and gas molecules under an electric field, the work The method includes emitting electrons by controlling operating parameters of said electron source.