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    • 1. 发明授权
    • Generator for producing a sawtooth and a parabolic signal
    • 用于产生锯齿波和抛物线信号的发生器
    • US4064406A
    • 1977-12-20
    • US708865
    • 1976-07-26
    • Robert Tiemeijer
    • Robert Tiemeijer
    • H04N3/16H03K4/04H03K4/501H03K4/90H04N3/23H04N3/233H03K4/08H03K4/84
    • H04N3/233H03K4/04
    • A generator suitable for producing a sawtooth and a parabolic signal for the line or field deflection in a television system. The generator is provided with two dc coupled, series-connected difference amplifiers with feedback, which are each part of an associated integrating circuit. Via a peak detection circuit the output of the second difference amplifier is connected to the non-inverting input of the first difference amplifier. The second integrating circuit has been rated in such a way that the peak-peak value of the parabolic signal is half that of the sawtooth signal, while independent of the peak-peak value adjustment the ground potential is present in both signals in the center of trace; consequently there are no centering difficulties.
    • 适合于产生用于电视系统中的线或场偏转的锯齿波和抛物线信号的发生器。 发生器配有两个具有反馈的直流耦合,串联连接的差分放大器,它们是相关的积分电路的每一部分。 通过峰值检测电路,第二差分放大器的输出连接到第一差分放大器的非反相输入端。 第二个积分电路的额定值是这样一种方式:抛物线信号的峰值值是锯齿波信号的峰值值,而峰值峰值调整接地电位独立于两个信号的中心位置 跟踪; 因此没有中心的困难。