公开(公告)号：US20050140400A1

公开(公告)日：2005-06-30

申请号：US10963576

申请日：2004-10-14

申请人： Sang-Yeol Yi ,  Kyong-Seok Kim

发明人： Sang-Yeol Yi ,  Kyong-Seok Kim

IPC分类号： G09G3/36 ,  H03B1/00

CPC分类号： G09G3/3655 ,  G09G3/3614

摘要： A common voltage source IC device includes an operational amplifier, a push-pull circuit receiving an output signal from the operational amplifier and outputting a common voltage to a common voltage terminal; an inverting resistor connected to an inverting input of the operational amplifier; a feedback resistor connected to the common voltage terminal and the inverting input; a capacitor connected to the common voltage terminal and the inverting input; a first switching resistor connected to the inverting input and a first switching transistor, the first switching transistor connected to the common voltage terminal; a driving resistor receiving a drive voltage and connected to a non-inverting input of the operational amplifier; a variable resistor connected to the non-inverting input and a ground source; and a second switching resistor connected to the non-inverting input and a second switching transistor, the second switching transistor connected to the ground source.

摘要翻译： 公共电压源IC器件包括运算放大器，接收来自运算放大器的输出信号的推挽电路，并将公共电压输出到公共电压端子; 连接到运算放大器的反相输入端的反相电阻器; 连接到公共电压端子和反相输入端的反馈电阻器; 连接到公共电压端子和反相输入端的电容器; 连接到所述反相输入端的第一开关电阻器和第一开关晶体管，所述第一开关晶体管连接到所述公共电压端子; 接收驱动电压并连接到运算放大器的非反相输入端的驱动电阻器; 连接到非反相输入端和可变电阻器的可变电阻器; 以及连接到所述非反相输入端和第二开关晶体管的第二开关电阻器，所述第二开关晶体管连接到所述接地源。

公开(公告)号：US07068092B2

公开(公告)日：2006-06-27

申请号：US10963576

申请日：2004-10-14

申请人： Sang-Yeol Yi ,  Kyong-Seok Kim

发明人： Sang-Yeol Yi ,  Kyong-Seok Kim

IPC分类号： H03K17/04

CPC分类号： G09G3/3655 ,  G09G3/3614

摘要： A common voltage source IC device includes an operational amplifier, a push-pull circuit receiving an output signal from the operational amplifier and outputting a common voltage to a common voltage terminal; an inverting resistor connected to an inverting input of the operational amplifier; a feedback resistor connected to the common voltage terminal and the inverting input; a capacitor connected to the common voltage terminal and the inverting input; a first switching resistor connected to the inverting input and a first switching transistor, the first switching transistor connected to the common voltage terminal; a driving resistor receiving a drive voltage and connected to a non-inverting input of the operational amplifier; a variable resistor connected to the non-inverting input and a ground source; and a second switching resistor connected to the non-inverting input and a second switching transistor, the second switching transistor connected to the ground source.

摘要翻译： 公共电压源IC器件包括运算放大器，接收来自运算放大器的输出信号的推挽电路，并将公共电压输出到公共电压端子; 连接到运算放大器的反相输入端的反相电阻器; 连接到公共电压端子和反相输入端的反馈电阻器; 连接到公共电压端子和反相输入端的电容器; 连接到所述反相输入端的第一开关电阻器和第一开关晶体管，所述第一开关晶体管连接到所述公共电压端子; 接收驱动电压并连接到运算放大器的非反相输入端的驱动电阻器; 连接到非反相输入端和可变电阻器的可变电阻器; 以及连接到所述非反相输入端和第二开关晶体管的第二开关电阻器，所述第二开关晶体管连接到所述接地源。