Vertical centering control circuit
    2.
    发明授权
    Vertical centering control circuit 失效
    垂直定心控制电路

    公开(公告)号:US3944881A

    公开(公告)日:1976-03-16

    申请号:US469010

    申请日:1974-05-10

    申请人: David P. Lynch

    发明人: David P. Lynch

    IPC分类号: H03K4/72 H04N3/227 H01J29/54

    CPC分类号: H04N3/227 H03K4/725

    摘要: Utilization of a diode in the input of the vertical deflection drive amplifier serves to render the amplifier insensitive to power supply variation and shortens the response time of the amplifier to changes in the vertical centering circuit. In one embodiment the diode is connected in series with the variable terminal of the centering potentiometer in the input of the vertical drive amplifier. In a second embodiment, wherein the vertical deflection drive amplifier includes a differential amplifier, the diode is connected to one input of the amplifier and the centering circuit is connected to the second input of the amplifier. In both embodiments the diode forms part of a time constant circuit which controls the linearity of the sweep signal applied to the input of the amplifier and also controls the response time of the amplifier to DC voltage level change.

    摘要翻译: 在垂直偏转驱动放大器的输入端使用二极管用于使放大器对电源变化不敏感,并缩短放大器对垂直定心电路变化的响应时间。 在一个实施例中,二极管与垂直驱动放大器输入端的定心电位计的可变端子串联连接。 在第二实施例中,其中垂直偏转驱动放大器包括差分放大器,二极管连接到放大器的一个输入端,定心电路连接到放大器的第二输入端。 在两个实施例中,二极管形成时间常数电路的一部分,时间常数电路控制施加到放大器的输入端的扫描信号的线性度,并且还控制放大器对直流电压电平变化的响应时间。