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lm3478 輸入電壓等於輸出電壓

做實驗 遇到問題!!!!

輸入電壓等於輸出電壓

DS 沒有波形 

FB 腳位 0.6V

空載和加載 0.2A 時狀況 

規格 輸入電壓 : 12V 

        輸入電流 : 10A 

         輸出電壓 :24V

         MOSFET   IRFP260N 

         電感 26uH