[問題] 想坐穩壓/穩流電路(高電流輸出)，該怎麼做?
大家好:
我想做一個穩壓/穩流的電路，該怎麼做呢?
輸出電壓12V
輸出電流3A(可調式)
目前想到的作法是，先用筆電的變壓器(Vout 19V，Iout 4.5A)降壓
在接LM317做可調式電流電路
電路圖如datasheet第18頁的"5A Constant Voltage/Constant Current Regulator"
http://www.national.com/ds/LM/LM317.pdf
不知道是否可行?
抑或是有更好、更簡單的做法?
謝謝!
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