2results about How to "Simple adaptation" patented technology

A method for withering tea leaves, using withering equipment including a fan (2), a temperature sensor (3), a control box (5), a heating tube (7), and a frame (8), wherein a perforated plate (1) is arranged in the frame (8) to form a trough, and a guide plate (4) is set below the perforated plate (1). The method includes the following steps: starting the control box (5) and measuring and determining the correspondence between the wind speed and the frequency of the fan (2) in segments; spreading the fresh tea leaves flat on the perforated plate (1), controlling the thickness of the spread tea leaves to ensure uniform spreading; setting the direction and wind speed parameters of the fan (2), and starting the fan (2) and the heating tube (7); repeating the blowing process of the fan (2) and the heating process of the heating tube (7) according to the direction and wind speed parameters set in step three until withering is completed. This achieves parameterized and precise control of the withering process.

This invention discloses a MOSFET-based isolated drive circuit system that is easy to control, comprising: an input voltage regulator circuit, a transformer drive circuit, a transformer secondary rectifier and filter circuit, a drive output, and a negative voltage bootstrap circuit; wherein, the input voltage regulator circuit includes: a linear voltage regulator element, a drive power supply, a feedback network, and a filter capacitor; the input terminal of the linear voltage regulator element is coupled to the drive power supply, the drive power supply input voltage is VIN, and the linear voltage regulator element is connected to ground through the coupled feedback network; the input voltage regulator circuit is used to provide a stable DC input to the transformer drive circuit. This invention separates the secondary winding of the transformer in the auxiliary power supply of traditional technology and places it in a discrete transformer, effectively reducing the insulation requirements of the auxiliary power supply transformer and making it easier to drive more MOSFETs. By driving with high-voltage MOSFETs, the problem of excessive auxiliary power supply windings is effectively solved.