5results about How to "Realize rectification" patented technology

This invention discloses a forward / reverse control module based on zero-crossing detection control, comprising a power supply circuit, an interlock delay circuit, a drive circuit, a switching circuit, a detection circuit, and a control unit. The drive circuit is connected in series between the interlock delay circuit and the switching circuit, and the switching circuit is connected in series between the load power supply and the winding terminals of the motor. The signal input terminal of the detection circuit is connected to the switching circuit. The control unit is connected to the interlock delay circuit to detect the presence of a forward rotation signal and / or a reverse rotation signal. The control unit is connected to the drive circuit through the detection circuit, and outputs a braking signal to the drive circuit. The drive circuit drives the corresponding switch in the switching circuit to conduct according to the braking signal, thereby realizing forward / reverse control and braking control of the motor. This invention combines forward / reverse control and braking functions without the need for additional braking components. It allows for adjustment of braking time and force, and features a simple braking structure, excellent performance, and high reliability.

This invention discloses a variable cross-section tail wing suitable for FSAE racing cars, comprising a variable cross-section wing assembly, an upper sparsity wing, a first lower sparsity wing, a second lower sparsity wing, and endplates. The variable cross-section wing assembly consists of a main wing, a first flap, and a second flap; all three wings are variable cross-section wings. The variable cross-section wing is a small, continuous section raised at mid-span. The main wing, the first flap, and the second flap are sequentially mounted between the two endplates, roughly diagonally distributed, with the second flap featuring a grunt flap. The upper sparsity wing is mounted on the corner of the endplate, while the first and second lower sparsity wings are located near the bottom of the endplate. There are two endplates, symmetrically mounted on both sides, each featuring louvers, an outer edge flange, a leading edge notch, a trailing edge notch, and guide strips. The variable cross-section wing can reduce the turbulence caused by the headrest and minimize airflow slippage in the spanwise direction, resulting in a more uniform pressure distribution on the wing surface. The louver structure also reduces drag.

The application discloses a novel high-efficiency 2.45GHz microwave rectifier circuit with high input power, which uses 0.8mm-thick FR4 medium as a plate material, inputs energy into the rectifier circuit through an SMA-KHD input socket, and realizes impedance matching of an input microstrip line and a capacitor pad through a ladder-type microstrip line, so that microwave energy enters an impedance matching and harmonic suppression microstrip line through a direct-current isolation capacitor, and then 2.45GHz microwave rectification is realized through an HSMS-270B rectifier diode, and a DC waveform after rectification supplies power to a load through a filtering inductor. Through the above design, the rectifier circuit has the capability of realizing high input power rectification, and realizes rectification at a maximum of 35dBm input; the novel rectifier circuit has a wide input power range, and can realize rectification in a range of 0dBm-35dBm; the novel rectifier circuit has high rectification efficiency under high power input, and realizes rectification efficiency of more than 50% in a range of 29dBm-33dBm, and the maximum rectification efficiency is 54.2%.

The invention provides a honeycomb rectification structure and device, a plasma light source and semiconductor equipment, the honeycomb rectification structure is applied to a laser-maintained plasma light source, the honeycomb rectification structure comprises a plurality of honeycomb units which are adjacently arranged, the honeycomb units form a channel structure used for allowing airflow to pass through, and the channel structure is used for allowing the airflow to pass through. The axial extension directions of the plurality of honeycomb units are parallel; and the heat exchange runners are arranged between the adjacent honeycomb units, allow heat exchange media to flow through and are used for absorbing heat of the honeycomb units. The honeycomb rectifying device comprises the honeycomb rectifying structure. And the heat exchange circulation system is connected with the heat exchange flow channel of the honeycomb rectification structure and used for driving the heat exchange medium to circularly pass through the heat exchange flow channel and discharging heat of the heat exchange medium.

The application belongs to the technical field of waste gas treatment, and discloses a VOCs adsorption-desorption-in-situ catalytic oxidation integrated treatment device and treatment method. The device is sequentially provided with an air inlet, an airflow rectification and distribution structure, a first adsorption catalytic reaction zone, a second adsorption catalytic reaction zone and a terminal catalytic oxidation reaction zone from one side to the other side. The airflow rectification and distribution structure is arranged perpendicularly to the direction of the waste gas flow and comprises a plurality of airflow adjusting vanes arranged side by side. Each airflow adjusting vane comprises a vane body and a vane rotating shaft. The vane body is arranged on the vane rotating shaft. The end of the vane rotating shaft is connected with a driving motor through a coupling. The rotation angle of each airflow adjusting vane is adjusted to rectify and distribute the airflow along the cross-sectional direction. The microwave feeding device is arranged outside each adsorption-catalytic reaction zone, and the filler is arranged inside each adsorption-catalytic reaction zone. The adsorption catalyst is attached to the filler. The adsorption, desorption and in-situ catalytic oxidation of VOCs in the waste gas can be realized.