41results about How to "Reduce output efficiency" patented technology

In the Group III nitride-based compound semiconductor light-emitting device of the invention, an non-light-emitting area is formed in a light-emitting layer. In a light-emitting diode where light is extracted on the side of an n-layer, an outer wiring trace portion and an inner wiring trace portion of an n-contact electrode impedes light emission from the light-emitting layer. Therefore, there are provided, at the interface between a p-layer and a p-contact electrode, high-resistance faces having a width wider than the orthogonal projections of contact areas between the outer and inner wiring trace portions and the n-layer on the interface between the p-contact electrode and the p-layer. Through this configuration, current flow is limited, and portions having a total area equivalent to that of the high-resistance faces of the light-emitting layer serve as non-light-emitting areas. Thus, current can be supplied preferentially to an area of the light-emitting area where the outer wiring trace portion and the inner wiring trace portion are difficult to shade light, whereby light extraction efficiency with respect to supplied current can be enhanced.

The invention relates to a method for forming and preparing an assembled laminated floor, which adopts a device for forming and preparing an assembled laminated floor. The present invention can solve the following problems in the processing and forming process of laminated floors: a. During the processing and forming of traditional laminated floors, the concrete may accumulate in a certain place due to the uneven pouring of concrete in the pouring process , resulting in uneven concrete blocks on the surface of the laminated floor slab. Affect the post-forming effect of laminated slabs. bBecause there are requirements for the spacing distance between V-shaped steel bars on laminated floors in production and life, in the process of traditional laminated floor processing and forming, one type of equipment corresponds to one specification of laminated floors. For laminated floors of different specifications, different equipment needs to be replaced, which increases the complexity of the production process of laminated floors, increases the production cost of laminated floors, and lowers the output efficiency.

The invention relates to a method of providing electrical power in an underwater hydrocarbon well device. The underwater hydrocarbon well device has a pipeline (2) surrounded by water for conveying a hydrocarbon fluid, and the method comprises attaching at least one body (1) to the pipeline at its outside, the body carrying at least one thermoelectric generating device (7), so that the device is in a temperature gradient resulting from a difference in temperature between the hydrocarbon fluid and the water surrounding the pipeline. The body comprises a clamp body which is a part of a clamp arrangement clamped to the outside of the pipeline.

The invention provides a boom cylinder energy-saving system, a control method thereof and an excavator, and relates to the technical field of engineering machines. The boom cylinder energy-saving system comprises a main pump, a variable-displacement hydraulic motor, a one-way clutch, a boom cylinder, an energy recovery valve block and an energy accumulator. When a boom descends, a boom valve element blocks an oil return port for descending of the boom cylinder, so that return oil is guided into the energy accumulator for conversion-free energy storage. When the boom ascends, the return oil in the energy accumulator is released through the energy recovery valve block and used for driving the variable-displacement hydraulic motor to rotate, and thus auxiliary torque is provided for the main pump. According to the boom cylinder energy-saving system, the descending potential energy of the boom cylinder is stored, so that recovery and reutilization of energy are achieved, and the energy-saving effect is good. The control method of the boom cylinder energy-saving system is easy to operate, safe and reliable and increases the utilization rate of high-pressure hydraulic oil. According to the excavator, the descending potential energy of the boom is recovered and reutilized, the output power of the energy is reduced, and the energy-saving purpose is achieved.

The invention discloses a vertical shaft wind-driven generation system structure and a control method thereof, belonging to the technical field of wind-driven generation. The structure comprises a bracket, a fixed pitch angle blade, a top combination component, a generator and a bottom combination component, wherein the top combination component consists of a bearing and top chassis; the bottom combination component comprises a braking device, a data gathering and controlling module, an energy consumption resistor and a base; the structure is characterized in that a fixed connecting rod in prior art is replaced by a middle control combination with adjustable and controllable pitch angle. The control method of the structure comprises the steps of: (1) setting an allowable value; (2) making the blade of a pitch variable fan vertical to the ground; (3) sampling an output signal regularly; (4) making a comparison between the collected value and the set value; (5) determining whether the collecting value is beyond the set value, if so, carrying out step (6), if not so, carrying out step (7); (6) making the blade of the pitch variable fan parallel to the ground; (7) changing the windward angle, and performing (8); (8) determining whether the wind speed is more than the rated wind speed, if so, access an energy consumption resistor, and returning to step (3); if not so, carrying out step (9); and (9) determining whether current wind speed is less than the accessed wind speed, if so, stopping operating the system, if not so, returning to step (3).

The invention discloses a digital power source based on PMBus. The digital power source comprises a main circuit power circuit and a digital control management unit. The digital control management unit comprises a PMBus digital controller, an ADC sampling conditioning circuit, a processor and a display terminal. The PMBus digital controller is connected with the main circuit power circuit and used for controlling the output voltage of the main circuit power circuit. The ADC sampling conditioning circuit is used for sampling the input voltage, the input current, the output voltage and the output current of the main circuit power circuit, and the ADC input voltage, the ADC input current, the ADC output voltage and the ADC output current are obtained respectively. The processor is used for transmitting the information of the ADC input voltage, the ADC input current, the ADC output voltage and the ADC output current to the display terminal. The digital power source is accurate in output voltage control, timely in fault signal response and capable of monitoring and controlling the input and output voltage and current, the temperature and the working state.