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三洋80P 机心彩电电源电路在国产彩电中被较多机型移植采用,机型不同,其元件编号可能不同,元件参数也许略有差异。下面以 TCL 9520型彩电电源原理图为例,对电容 C508在本电路中的作用加以分析。一、电源电路工作原理1.自激振荡的建立:交流220V 市电经桥式整流器 D501整流、电容 C506滤波后,得到约300V 的直流电压,加到开关变压器⑦脚,经①脚加至电源开关管
Sanyo 80P telecentric circuit power supply circuit color TV in the country by more models are transplanted with different models, its component numbers may be different, the components may be slightly different parameters. The following TCL 9520-type color TV power schematic, for example, the role of the capacitor C508 in this circuit to be analyzed. First, the working principle of the power circuit 1. Self oscillation oscillation established: AC 220V electricity through the bridge rectifier D501 rectifier, capacitor C506 filter, get about 300V DC voltage, added to the switching transformer ⑦ feet, the ① pin added to the power turning tube