(十六)行振荡器脚23外接行振荡RC网络,如图20所示。行振荡器由两个比较器组成,将RC网络上的电压波形同两个电平进行比较,而这两个电平在集成电路内是固定的,它将决定是充电还是放电状态。第一鉴相器(脚24)使压控振荡器维持在准确的工作行频上,通过外接在脚23和脚24之间的电阻,向行振荡器提供校正电流。 (Sixteen) line oscillator pin 23 external row oscillation RC network, as shown in Figure 20. The line oscillator consists of two comparators that compare the voltage waveform on the RC network with two levels that are fixed within the integrated circuit and will determine whether to charge or discharge. The first phase detector (pin 24) maintains the VCO at an accurate line frequency and supplies a correction current to the row oscillator through an external resistor connected between pin 23 and pin 24.