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第三讲 X线影象增强器电视中的基本电路由于对X线影像增强器电视的使用要求和工作对象的不同,导致对电路的要求和处理各有其自身的特点。本讲主要介绍X线影象增强器电视中的各种基本电路。一 X线影象增强器电视的电路组成 X线影象增强器电视的电路组成如图31所示。由晶体振荡器作X线影象增强器电视的主振器,主振脉冲经分频和处理得到了行、场推动、复合消隐和复合同步四种信号。行、场推动信号是摄象机扫描和特殊信号形成电路的触发源。复合消隐信号是用来形成电视系统标准图象的黑电平。复合同步信号
Third Lecture X-ray image intensifier TV in the basic circuit due to the X-ray image intensifier TV use requirements and the different objects, resulting in the circuit requirements and processing have their own characteristics. This talk mainly introduces various basic circuits in X-ray image intensifier TV. Circuit of an X-ray image intensifier TV The circuit of an X-ray image intensifier TV is shown in FIG. 31. By the crystal oscillator for the X-ray image intensifier TV main oscillator, the main pulse by the frequency and pulse processing division, field promotion, composite blanking and composite synchronization of four signals. Line, field push signal is the trigger of camera scanning and special signal forming circuit. The composite blanking signal is a black level that is used to form a standard picture of a television system. Composite synchronization signal