COLOR SYNCHRONOUS CONTROL CIRCUIT AND METHOD FOR COLOR TELEVISION

摘要

A main controller(400) which controls DC voltage automatically and decides if the accumulated cycles are within the range of appropriate area is connected to a DC voltage supplier(100) which provides DC voltage to a PCB(200) and to a frequency counter(300). And a color synchronous circuit(500) which stabilizes the color synchronous signal by filtering is connected to the frequency counter(300). As a motor controller(420) drives a motor(430), an adjusting point(210) of the PCB(200) is controlled automatically. Then the color synchronous circuit is composed of a amplifying circuit(510), a band pass filter(520) and another amplifying circuit that adjusts the size of signal level and stabilizes it.