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MAS applies for a power supply protection circuit patent, which can effectively enhance the capacity of the intrinsic safety protection circuit power supply to carry capacitive loads

Article Source：Kinri Energy | Author：Kinri Energy | Issuing Time：2024.04.27
On April 27, 2024, the financial sector reported that, according to the announcement of the China National Intellectual Property Administration, Chongqing Meiansen Technology Co., Ltd. applied for a power supply protection circuit named "a pre charging and current intercepting power supply protection circuit with load detection function", with the publication number of CN117937386A, and the application date of December 2023.

The patent abstract shows that the present invention relates to the field of protective circuit technology, specifically to a pre charging and current cutting power supply protection circuit with load detection function, including: a pulse charging module for charging a load device with a preset pulse width after the power supply is started; The load detection module is used to detect the voltage characteristics of the load device after charging it with a preset pulse width, and control the output of the main circuit based on the voltage characteristics; The current detection module is used to detect the output current of the main circuit, and to protect and control based on whether the output current of the main circuit exceeds the threshold. The present invention uses a pulse method to charge a load device with constant current. By detecting the voltage at the input end of the load device during pulse charging, it is possible to truly determine whether the load device is a capacitive load or a short circuit, and to distinguish and control the main circuit, effectively improving the ability of the intrinsic safety protection circuit power supply to carry capacitive loads.


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