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七、并联型自激式(分立)开关电源的原理与检修用分立元件组成的并联型自激式开关电源在我国早期生产的彩色电视机中应用较广。下面以东芝X56P机芯和胜利7685KP机芯彩电开关电源为例(这两种机芯的电路结构完全相同),介绍该类彩电开关电源的工作原理和检修方法。采用上述两种机芯的彩电有东芝和胜利十几种进口机型以及黄河、凯歌、长城、华日、天鹅、北京、西湖、
Seven, shunt self-excited (discrete) switching power supply principle and maintenance of discrete components with a parallel self-excited switching power supply in China’s early production of color television sets are widely used. The following Toshiba X56P movement and victory 7685KP movement color TV switching power supply, for example (both the movement of the circuit structure is exactly the same), describes the type of color TV switching power supply works and maintenance methods. Toshiba and victory with more than a dozen imported models and the Yellow River, Kaige, the Great Wall, China and Japan, the Swan, Beijing, West Lake,