目前彩色电视机场输出电路中广泛采用OTL功放电路，由于场偏转线圈电感的作用，逆程期间出现较高的电压，因此要求场输出电路电源采用较高电压，以保证足够短的逆程时间，使场输出电路效率远低于音频OTL功放的效率。由于场输出管的功耗主要是在扫描正程期间较低电压，因此在彩 At present, the OTL amplifier circuit is widely used in the color TV airport output circuit. Due to the effect of the field deflection coil inductance, a higher voltage occurs during the reverse process, so that the field output circuit power is required to adopt a higher voltage to ensure a sufficiently short reverse time , Making the field output circuit efficiency is much lower than the efficiency of audio OTL amplifier. Because of the field output tube power consumption is mainly lower during the scan voltage, so the color