Patent ID: 7960954
Filing Date: 2011-06-14
Classification: G05F

Abstract:
1. A voltage adjusting apparatus, comprising: a power adaptor outputting a first current; a first resistor, coupled with the power adaptor, for converting the first current to a first voltage; a current detecting module, coupled with the first resistor, for converting the first voltage to a second current; a second resistor, connected to the ground and coupled with the current detecting module, for converting the second current to a second voltage; and a voltage feedback controlling module, coupled with the power adaptor, the current detecting module, and the second resistor, for converting the second voltage to a third voltage, wherein the power adaptor converts the third voltage to a fourth voltage and outputs the fourth voltage, wherein the power adaptor has a second output terminal, a third input terminal and a node, and the power adaptor comprises: a fifth resistor coupled with the third input terminal and the node; a sixth resistor coupled with the node and the second output terminal; a seventh resistor connected to the ground and coupled with the node; and a voltage regulator, connected to the ground and coupled with the node and the seventh resistor, for regulating the voltage of the node to maintain a constant value.