电源模块是市场近年出现的开关电源整个替代组件,多由 UC3842、KA3842等脉宽调制电路和大功率场效应管组成,此种电源组件:安装方便、效率较高,发热量小,电压适应范围宽已成为维修人员,特别是“缺医少药”偏远山区的维修人员的常备品。面对昂贵的厚膜块,面目全非的转修机电源板,全面“老化”甚至底板漏电是经常,甚至一瞬间烧毁电 Power module is the market in recent years, the entire switching power supply alternative components, and more by UC3842, KA3842 and other pulse width modulation circuit and high-power FET components, such power components: easy installation, high efficiency, heat, voltage range Wide has become a maintenance staff, especially “lack of medical medicine ” remote mountain maintenance staff standing. In the face of expensive thick film block, completely different turn machine power board, a comprehensive “aging ” and even the floor leakage is often, or even a flash burn electricity