电动车充电器3842第6脚一通电就被击穿怎么回事啊，请师傅指教 电动车充电器UC3842，7脚电压为13v。8脚无电压是什么...

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场效应管漏电，6脚没有接电阻到地，6脚没有安装稳压二极管，大约16伏就够了

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