Re: [問題] iphone用ipad的頭、線來充電好嗎
※ 引述《kingfsg7326 (出手金銀鄧九五)》之銘言:
: 如題,我家裡的豆腐頭跟線一起不見
: 家裡有ipad的大充電頭跟沒拆的ipad線,請問適合給iphone充電嗎
文組來回答你一下
不管iphone/ipad豆腐頭都是 5V constant voltage supply
(在負載不太大的情況)
差別在於
phone頭 最大電流約 1.0A (也就是負載電阻不能低於 5Ω)
ipad頭 最大電流約 2.0A (負載電阻不能低於 2.5Ω)
所以,你拿 5Ω的 iphone 去 ipad頭充,可輕鬆勝任
反之, 2.5Ω的 ipad 去 iphone頭充,就跑不動 (且有危險!!)
補一個故事
本肥宅的 12V/4A 螢幕變壓器壞了
想說用光華買的那種,萬用變壓器 (12V/1A) 暫代一下,應該沒問題
用大概十分鐘,一聲響亮的爆炸聲+燒焦味+一縷青煙 ~~~~
唉,電路老師時常請假的後果 = =
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 110.27.68.169
※ 文章網址: https://www.ptt.cc/bbs/iPhone/M.1464555748.A.3EC.html
※ 編輯: newversion (110.27.68.169), 05/30/2016 05:04:08
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估計是 ipad 或 頭,有自動調整機製
不然要不要去試試 5V/==1A頭去 接 2.5Ω或更小的純電阻
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嗯 手機控制電流
若是二三流手機,千萬別去插 電流不足的變壓器
我就親身經歷 (12V/max1A) 變壓器爆炸的經驗,嚇死乳肥宅了!!
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都表明文組了, 鞭小力點嘛 = =
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※ 編輯: newversion (39.15.133.42), 05/30/2016 12:51:12
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順便請教各位電子系高材生大哥大姐們...
小的變壓器爆炸的原因是什麼? 變壓器過勞死嗎?
像這樣接:
[12V =.=1A]變壓器 <--------> [[ CMV 15吋熒幕 12V/4A ]]
魯至今仍在迷惑不知原因 感恩唷~~~
※ 編輯: newversion (39.15.133.42), 05/30/2016 13:06:13
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猜測雜牌頭,調配機制會失靈吧??
雜牌[12V =.=1A]變壓器 <--- 可能電流控制失靈,硬輸出4A 不堪負載就爆了吧
※ 編輯: newversion (39.15.133.42), 05/30/2016 13:31:00
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虛心求教 弱者要需要被照顧~~ ^^
※ 編輯: newversion (39.15.133.42), 05/30/2016 13:32:13
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