Patent ID: 8816722
Filing Date: 2014-08-26
Classification: G01R

Abstract:
1. A circuit comprising: a first connection terminal and a second connection terminal; a first resistor, a second resistor, a third resistor and a fourth resistor; a first transistor, a second transistor and a third transistor; and an output terminal, wherein one terminal of the first resistor is connected to the first connection terminal, and the other terminal of the first resistor is connected to the second connection terminal, wherein one terminal of the second resistor is connected to the one terminal of the first resistor, wherein one terminal of the third resistor is connected to the other terminal of the first resistor; wherein a source of the first transistor is connected to the other terminal of the second resistor, wherein a source of the second transistor is connected to the other terminal of the third resistor, and a drain and a gate of the second transistor are connected to a gate of the first transistor, wherein a source of the third transistor is connected to the source of the second transistor, a gate of the third transistor is connected to a drain of the first transistor, and a drain of the third transistor is connected to the output terminal, and wherein one terminal of the fourth resistor is connected to the drain of the third transistor and the output terminal.