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    • 34. 发明授权
    • Vertical deflection circuit
    • 垂直偏转电路
    • US4031430A
    • 1977-06-21
    • US631460
    • 1975-11-12
    • Shigeru Enomoto
    • Shigeru Enomoto
    • H03K4/62H01J29/70H01J29/76
    • H03K4/625
    • This invention relates to improvements in a vertical deflection circuit employing a class D amplifier. The circuit comprises a pulse width modulator for converting a sawtooth waveform signal to a width modulated pulse train, a switch mode power amplifier for amplifying said width modulated pulse train, a demodulating filter circuit for demodulating said width modulated pulse train to the sawtooth waveform, a damping circuit for preventing a significant power loss in said demodulating filter circuit and a deflection yoke coupled to said demodulating filter circuit, thereby making it possible to reduce power dissipation in the circuit.
    • 本发明涉及采用D类放大器的垂直偏转电路的改进。 该电路包括用于将锯齿波形信号转换为宽度调制脉冲串的脉宽调制器,用于放大所述宽度调制脉冲串的开关模式功率放大器,用于将所述宽度调制脉冲串解调为锯齿波形的解调滤波电路, 阻尼电路,用于防止所述解调滤波器电路中的大量功率损耗和耦合到所述解调滤波器电路的偏转线圈,从而可以减少电路中的功率耗散。