电视机的行扫描电路是整机的关键部分,它除了给偏转线圈提供线性良好的锯齿波扫描电流以外,同时还通过行输出变压器提供显像管的阳极高压(25kV)、聚焦极电压和加速极电压等。它工作在高频、高压和大电流条件下,所以它的工作稳定性对整机性能影响极大。努力改善行扫描电路工作的稳定性,降低耗电量,是提高整机性能的有效途径。本文提出用V-M0S管取代常用的双极型晶体管作行输出管。V- TV line scan circuit is the key part of the machine, which in addition to the deflection coil to provide a good linear sawtooth sweep current, but also through the line output transformer to provide the anode tube high voltage (25kV), the focus voltage and acceleration voltage Wait. It works in high frequency, high voltage and high current conditions, so its stability of the great impact on the performance of the machine. Efforts to improve the stability of the line scan circuit work and reduce power consumption, is to improve the overall performance of an effective way. This paper proposes V-M0S tube instead of the commonly used bipolar transistor for the output line. V-