Patent ID: 9046911
Filing Date: 2015-06-02
Classification: G05F,H03F

Abstract:
1. A variable voltage generation circuit, comprising: an amplifier having a first input terminal for receiving a first voltage, a second input terminal for receiving a reference voltage, a third input terminal, and an output terminal; a P-type metal-oxide-semiconductor transistor having a first terminal for receiving the first voltage, a second terminal coupled to the output terminal of the amplifier, and a third terminal; a first variable resistor having a first terminal coupled to the third terminal of the P-type metal-oxide-semiconductor transistor for outputting a first variable voltage, and a second terminal coupled to the third input terminal of the amplifier, wherein the first variable resistor comprises: a lower resistor having a first terminal coupled to the third input terminal of the amplifier, and a second terminal coupled to ground, wherein turning-on of the i