| 摘要 |
A charging circuit used to identify a power source connected to a portable electronic device includes a connector, an identifying circuit, and a central processing unit. The connector includes a voltage bus contact, a ground contact, a positive data contact and a negative data contact. The identifying circuit is connected to the positive data contact or the negative data contact to identify the power source and generates a configuration signal. The central processing unit receives the configuration signal and operates a corresponding charging mode. |
