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Xu Ji Electric has obtained utility model patent authorization: "An auxiliary power supply protection circuit and auxiliary power supply"

Article Source：Qichacha | Author：Securities Star News | Issuing Time：2024.04.01
Securities Star News: According to data from Qichacha, Xuji Electric (000400) has recently obtained a utility model patent authorization, titled "An Auxiliary Power Supply Protection Circuit and Auxiliary Power Supply", with patent application number CN202322163721.1 and authorization date of March 29, 2024.

Patent Abstract

This utility model belongs to the technical field of power supply protection circuits, and specifically relates to an auxiliary power supply protection circuit and an auxiliary power supply. The protection circuit includes an undervoltage protection module, which includes a control chip and a first voltage divider branch; The control chip is used to connect the controlled end of the control switch of the auxiliary power supply, and the first voltage branch is used to connect to the input end of the auxiliary power supply and the ground; The first voltage divider is sequentially connected to the ground from the input end of the auxiliary power supply on the first voltage divider. The voltage divider points of the first and second voltage divider are connected to the power supply end of the control chip. The resistance value of the first voltage divider must ensure that when the voltage at the input end is below the undervoltage threshold, the voltage at both ends of the second voltage divider is lower than the starting voltage of the control chip. The use of the auxiliary power supply protection circuit of this utility model can reduce the voltage resistance requirements of the auxiliary power supply protection circuit on the control switch, thereby reducing the production cost of the protection circuit.


Attached figures of the abstract

Since the beginning of this year, Xuji Electric has obtained 62 new patent authorizations, an increase of 67.57% compared to the same period last year. Based on the company's mid year financial data for 2023, the company invested 296 million yuan in research and development in the first half of 2023, a year-on-year increase of 21.2%.
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