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    • 1. 发明授权
    • Television receiver start-up circuit
    • 电视接收机启动电路
    • US4415842A
    • 1983-11-15
    • US407418
    • 1982-08-12
    • Raymond J. KulkaWilliam A. Trzyna
    • Raymond J. KulkaWilliam A. Trzyna
    • H04N3/16H01J29/70
    • H04N3/16
    • A television receiver start-up circuit wherein the conventional start-up transformer is eliminated by initiating horizontal output circuit operation directly from the unregulated B+ driven horizontal driver transformer is disclosed. An astable multivibrator energized by the line referenced unregulated B+ power supply provides a pulsed output to the horizontal driver transformer for initiating oscillation of the horizontal output transistor in initiating television receiver sweep operation.Multivibrator operation is timed out following application of the unregulated B+ thereto for termination of the start-up signal and operation of the horizontal drive circuitry by the television receiver's line isolated power supply in sustaining television receiver operation.
    • 公开了一种电视接收机起动电路,其中通过直接从未调节的B +驱动的水平驱动变压器开始水平输出电路操作来消除传统的起动变压器。 由参考的不受监管的B +电源供电的不稳定多谐振荡器为水平驱动变压器提供脉冲输出,用于在启动电视接收机扫描操作时启动水平输出晶体管的振荡。多路复用器操作在应用未调节B +之后超时以终止 的启动信号和水平驱动电路的操作由电视接收机的线路隔离电源维持电视接收机操作。