Patent Number: 8,823,403

Title: Load circuit for testing USB ports

Abstract: An exemplary load circuit includes a switch unit and a current dividing circuit. The switch unit includes a number of switches. The current dividing circuit includes a number of sub-circuits. A terminal of a resistance module of each of the sub-circuits is connected to both a power terminal and a terminal of a corresponding one of the switches. The other terminal of the resistance module of each of the sub-circuits is connected to a drain of a transistor of each of the sub-circuits. A source of the transistor is connected to ground. A gate of the transistor is connected to ground, and is also connected to another terminal of the corresponding switch.

Inventors: Li; Zhen-Sen (Shenzhen, CN), Shen; Jian-She (Shenzhen, CN)

Assignee: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.

International Classification: G01R 31/04 (20060101); G06F 3/00 (20060101); G06F 13/20 (20060101)

Expiration Date: 9/02/12018