Patent ID: 8467156
Filing Date: 2013-06-18
Classification: H02M

Abstract:
1. A power protection circuit, comprising: a power providing unit configured for providing power supply; a first voltage converter; a first switch interconnected between the power providing unit and the first voltage converter; a second voltage converter; a second switch interconnected between the power providing unit and the second voltage converter; a first voltage detecting circuit connected to the first voltage converter and the first switch; a second voltage detecting circuit connected to the second voltage converter and the second switch; a first warning circuit connected to the first voltage detecting circuit; and a second warning circuit connected to the second voltage detecting circuit; wherein when the input voltage of the first voltage detecting circuit drops, the first switch turns off the first voltage converter, and the first warning circuit signals a warning; when the input voltage of the second voltage detecting circuit drops, the second switch turns off the second voltage converter, and the second warning circuit signals a warning.