風扇集線器3pin可以PWM? - 3C
By Hazel
at 2017-11-15T21:34
at 2017-11-15T21:34
Table of Contents
https://imgur.com/5iOmedg
https://i.imgur.com/3WWjKVK.jpg
如上圖
看很久還是不太理解?
看圖上的說法是最左上角的那條線是接到主機板4pin上,
然後其它的PWM扇接上3pin的就可以有PWM轉速控制的功能了。
可是依我的理解4pin裡面的第4根不是才是調轉速的嗎?
那根沒插是要怎麼控轉速?
還是這是用降電壓來控風扇的?
但這樣不就不是叫PWM了嗎...?
最後還是不解為何只有那個白色的是4pin?
是只有插那一根的扇才有PWM功能?
--
https://i.imgur.com/3WWjKVK.jpg
如上圖
看很久還是不太理解?
看圖上的說法是最左上角的那條線是接到主機板4pin上,
然後其它的PWM扇接上3pin的就可以有PWM轉速控制的功能了。
可是依我的理解4pin裡面的第4根不是才是調轉速的嗎?
那根沒插是要怎麼控轉速?
還是這是用降電壓來控風扇的?
但這樣不就不是叫PWM了嗎...?
最後還是不解為何只有那個白色的是4pin?
是只有插那一根的扇才有PWM功能?
--
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3C
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