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[智能電話] 一分錢一分貨,要安全,還是要「便宜又大碗」?

要簡單用一粒chip+兩粒電容已經可以做到輸出質素唔差的尿袋
"All animals are equal, but some animals are more equal than others."

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引用:
原帖由 rickywk 於 2011-7-19 00:22 發表

仲有溫控、DC Input呢?
最簡單 : 7805
溫控 : internally limited, 就算你想overdrive都唔會點樣有可能drive到150度
DC input control : 7805 Dropout spec由1.5~3v, 用7.4v nominal 的電(6~6.4v=discharged)推一到 min. dropout 就自動收皮

無人用7805只係因為efficiency低同價錢真係太cheap而已
"All animals are equal, but some animals are more equal than others."

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原帖由 rickywk 於 2011-7-19 00:47 發表

我成日都話,鋰電成本真係好平,但貴在QC!

耐唔耐就聽到話機場空郵中心有件著火,次次都係o的山寨鋰電短路、受壓出事,之前做物流,試過跌一跌件貨就出煙,問你死未 ...
如果唔係點會興18650..
"All animals are equal, but some animals are more equal than others."

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引用:
原帖由 小馬馬 於 2011-7-19 00:55 發表


要爆起上黎,18650一樣屎忽開花………
有pressure valve, Case, 點都比包膠堅固
"All animals are equal, but some animals are more equal than others."

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