公开(公告)号：US09874589B2

公开(公告)日：2018-01-23

申请号：US14939400

申请日：2015-11-12

Applicant: ZIPPY TECHNOLOGY CORP.

Inventor： Tsun-Te Shih ,  Yu-Yuan Chang ,  Kuang-Lung Shih ,  Wen-Lung Li ,  Heng-Chia Chang

IPC: G01R13/04 ,  G01R19/00

CPC classification number: G01R19/0092 ,  G01R31/42 ,  H02H9/001

Abstract: An inrush current recording module is installed in a power supply unit. The power supply unit has a front-stage power circuit and a back-stage power circuit. The front-stage power circuit includes a first ground terminal, and the back-stage power circuit includes a second ground terminal. The inrush current recording module includes a series circuit and a detection recording unit. The series circuit is formed by a capacitor and a resistor, and includes two ends thereof respectively connected to the first ground terminal and the second ground terminal. The detection recording unit detects the resistor to generate a voltage signal, compares the voltage signal with a voltage determination level, starts timing an inspection period when the voltage signal is greater than the voltage determination level, and records whether a current inrush current is harmful or harmless according to whether a power output signal is obtained within the inspection period.