3results about How to "Increase work rate" patented technology

The invention discloses a low-dropout linear voltage stabilizing circuit, which is characterized by comprising an error amplifier, a frequency compensation circuit, a feedback loop and a power device, the output of the error amplifier is cascaded with the power device to form a circuit main loop; the feedback loop is used for providing a feedback signal reflecting the change of the output voltage of the power device, and the frequency compensation circuit adopts a power tube structure with a pseudo ESR resistor to realize frequency compensation of a main loop of the circuit together with the feedback loop; the error amplifier adopts two-stage circuits, one end of the first-stage circuit is connected with a reference signal, the other end of the first-stage circuit is connected with a feedback signal of the feedback loop, and the two signals are compared and input to the second-stage circuit in a current form; and the second-stage circuit adopts a feedforward coupled AB output stage structure, so that rail-to-rail output of the output voltage is realized, the magnitude of the current provided by the power device to the outside is controlled, and the output voltage is stable.

This utility model discloses a sand screening device for engineering construction, including a screening chamber. A screen plate is detachably installed inside the right side of the screening chamber. A drive motor is installed at the center of the rear end of the screening chamber. A first chain disk is installed at the output shaft end of the drive motor, and a actuating block is fixedly connected to the front end of the first chain disk. This utility model, by setting a screening frame inside the screening chamber, allows sand entering the screening chamber from the top to fall into the screening frame through the guidance of the first guide block. When the drive motor starts, it drives the stirring blades to rotate via the first chain disk and the actuating block. The stirring blades can quickly tumble and screen the sand in the screening frame. Furthermore, the rotation of the actuating block can push a moving block to move. This moving block can then drive a slider to slide on a sliding rod and compress a spring on one side. The moving block can also drive the screening frame to reciprocate laterally within the screening chamber, thereby efficiently screening the sand in the screening frame.

This utility model relates to the technical field of feeder regulators, and discloses a feeder regulator for pneumatic feeding, including a body, a pipe, and a protective box. A speed adjustment component is installed inside the pipe, and a groove is formed inside the protective box. An angle adjustment component is installed inside the groove. The speed adjustment component includes a motor, the output end of which is fixedly connected to a bevel gear. A second bevel gear is rotatably connected inside the fixed box, and a rotating shaft is fixedly connected inside the second bevel gear. A semi-circular plate is fixedly connected to the bottom of the rotating shaft. In this utility model, when adjusting the flow rate, starting the motor drives the rotating shaft through the first and second bevel gears to rotate the fixed plate, controlling the included angle to adjust the airflow and discharge speed. When adjusting the angle, starting the motor drives the pipe to rotate through gears and a gear ring. Bearings ensure stability and sealing, saving space and improving efficiency.