34results about How to "Achieve power output" patented technology

It is an object of the invention to provide a reliable ignition by a spark plug in a combustion power tool. Representative combustion power tool may comprise a combustion chamber, a gas supply section, a single spark plug, an ignition control device, a cylinder connected to the combustion chamber, a piston member and a tool member. The ignition control device includes a plurality of ignition circuits connected to the single spark plug to independently input power to the spark plug, and a control section that controls the manner of power input in each of the ignition circuits. According to such construction, power input in each of the ignition circuits can be controlled and therefore, a desired power output at the single spark plug can be realized.

The invention discloses a front surface grid-line-free P type crystal silicon back contact two-sided battery structure and a manufacturing method therefor. A transparent conductive film is positioned on a front surface passivation film and an antireflection film; via hole electrodes used for connecting front surface and back surface negative electrodes of the battery are arranged in through holes in a P type crystal silicon wafer; partial heavily-doped N+ regions distributed based on regular patterns are arranged on the surface layer of an N type layer; the transparent conductive film passes through the antireflection film and the front surface passivation film to be in electrical contact with the partial heavily-doped N+ regions and the top ends of the via hole electrodes to form a battery negative electrode; the transparent conductive film is used for guiding electrons collected on the front surface of the battery to the back surface of the battery through the via hole electrodes; and back surface positive electrode thin grid lines pass through a first back surface passivation film and a second back surface passivation film to form partial ohmic contact with a P type substrate and to be connected with back surface positive electrode main grid lines together to form a battery positive electrode. By virtue of the battery structure and the manufacturing method therefor, light shielding of the battery positive electrode is avoided, power output is increased, consumption amount of silver paste in the battery manufacturing process is reduced, and production cost is lowered.

A power generation system, which includes: an internal feedback generator, which includes a rotor winding arranged on a rotor, and a main winding and a feedback winding arranged on a stator, wherein the main winding is electrically connected to a grid; a double-fed converter, which Connected between the rotor winding and the feedback winding, it is used to control the active power and reactive power output by the main winding. In this system, the stator main winding is directly connected to the high-voltage power grid, thus eliminating the need for a conventional step-up grid-connected transformer, and the generator feedback winding and rotor winding adopt low-voltage working voltage, so as to adopt low-voltage type with mature technology and low cost. Converter.

A single-phase two-tube five-level rectifier based on a hybrid H-bridge, including a switching tube Q 1 , switch tube Q 2 , one side of the AC power supply Vs is respectively connected to the diode D 1 anode, diode D 2 Cathode, the connection node constitutes the terminal b; the other end of the inductor L and the diode D 3 、D 4 、D 5 、D 6 The connection node of constitutes the terminal a; the switching tube Q 1 Drain and Diode D 1 、D 3 、D 7 The connecting node constitutes the terminal c; the switching tube Q 1 source and diode D 2 、D 4 、D 8 The connection node of constitutes the terminal d; the diode D 8 Anode connection capacitor C 2 The negative electrode constitutes the terminal m; the diode D 11 anode, diode D 12 Cathode, capacitor C 2 The positive electrode is connected to the capacitor C 1 The negative electrode constitutes the terminal n; the diode D 7 Cathode connection capacitance C 1 The positive pole constitutes the terminal p. Endpoint a, endpoint c, endpoint d, and endpoint n constitute four ports of the hybrid H-bridge. The rectifier of the present invention has the advantages of high output direct current voltage, low harmonic content, low switch tube stress, relatively simple control and the like.

The invention provides a clamping structure for a grinding bar of a medical grinding machine. The clamping structure comprises a first sleeve tube (2), a second sleeve tube (3), a push block (42), a taper sleeve (41) and steel balls (5). The second sleeve tube (3) is provided with slotted holes (8) with the diameter of lower openings being smaller than that of upper openings, and the steel balls (5) are arranged in the slotted holes (8). The taper sleeve is connected to the second sleeve tube in a sleeving mode, is in sliding connection with the second sleeve tube and is used for limiting the steel balls (5). The push block is used for pushing the taper sleeve to move. By the adoption of the clamping structure, axial vertical rigid force can be applied to the grinding bar through the steel balls, the problem of steel ball skewing caused by vibration in the working process of the grinding machine and pressure to the steel balls by the grinding bar cannot happen, and the phenomena that the grinding bar slips, cannot be clamped tightly and cannot be pulled out due to abrasion increase of three-petal chuck inner holes and blockage by cutting objects are avoided.

A hybrid bridge arm single-phase three-level power factor correction circuit, AC power u g one side with a shunt inductor L 1 , L 2 connected, the inductance L 1 Switch tube S 1 drain and D 1 The anode is connected to form the intersection point a; the inductance L 2 with diode D 2 Cathode and S 2 source, forming intersection point b; AC source u g The other side with diode D 5 Anode and D 6 The cathodes are connected to form the intersection N; the diode D 1 Cathode, D 3 Cathode, switch tube S 2 drain and capacitance C 1 Anode connected to point p; diode D 2 Anode, D 4 Anode, switch tube S 1 source and capacitor C 2 The negative pole is connected to point m; the switch tube S 3 source, S 4 Drain and Split Capacitor C 1 Negative pole, C 2 The positive pole is connected to point n. The power factor correction circuit of the present invention has a three-level structure, and has the advantages of high efficiency, high reliability, lower harmonics and voltage stress, smaller alternating current harmonics, and the like.

The invention relates to the field of corn threshing and screening devices, in particular to a corn threshing and screening device, including a main body, a threshing mechanism, an opening and closing mechanism, a screening mechanism, a conveying mechanism and a power mechanism; the traditional manual threshing is avoided by setting the threshing mechanism The operation can save time and effort, and improve the threshing efficiency. The opening and closing angle of the sealing cover can be adjusted arbitrarily through the setting of the opening and closing mechanism, so as to facilitate the maintenance of the inside of the main body, simplify the troubleshooting steps of the main body in the later stage, and pass the screening mechanism. The setting is convenient for screening corn kernels of different sizes, thereby improving the economic value of corn. The setting of the conveying mechanism is convenient for quickly transporting the corn kernels to the top of the screening mechanism, assisting the screening work of the screening mechanism, and the setting of the power mechanism is convenient. At the same time, it provides power for the threshing mechanism and the conveying mechanism, which facilitates the simultaneous operation of the two, reduces the setting of multiple redundant power sources, and improves the utilization rate of the internal space of the main body.