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Re: [討論] HW硬體工程師所面對到的挑戰
Sep 25th 2013, 00:19, by atlaswhz
作者atlaswhz (王仔)
看板Tech_Job
標題Re: [討論] HW硬體工程師所面對到的挑戰
時間Wed Sep 25 00:19:45 2013
※ 引述《Maxwell3 (RF達人)》之銘言: : 各位前輩晚安 : 小弟有個問題想請教 : 在上一篇有前輩提到在高速訊號會遇到SI/EMC問題 : 有些IC廠或系統廠都會有SI/PI/EMC Team : 是在專門解決這問題的麻? : 就我所知,硬體HW在解決EMI這問題,一般都從板子著手,用個銅箔把最有可能 : 造成EMI問題的訊號線或IC包覆起來,好像是經驗法則,這樣確實有效。 : 如果是的話 : SI/PI/EMC這塊領域的價值在哪呢? 價值在於EMC 工程師能不能在layout階段一眼看出EMI的risk,並且降低EMI打到RF 的可能性,什麼樣的shielding case cost最低?蓋哪邊才有效? 從板端下手,比事後貼貼布來得帥氣又省錢!況且貼布不是萬能! 舉個例子,假設用耳機線的GND當FM的接收路徑,偏偏GND在100M又很髒,你濾雜訊時 同時把FM都濾掉了,這只能layout解,萬一EMI工程師不強,只能每天關chamber PS:什麼事情都丟給IC廠去解,責任釐清會盧不完,schedule滑了又滑! 結論是:EE當自強,多看點書,自己review layout比較實在 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.34.217.102
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[閒聊] 9月24日晚上, 態度惡劣的中國附醫的護士
Sep 25th 2013, 02:32, by ntcbsinica
作者ntcbsinica (史威登堡)
看板TaichungBun
標題[閒聊] 9月24日晚上, 態度惡劣的中國附醫的護士
時間Wed Sep 25 02:32:52 2013
9月24日晚上, 跟診中西醫結合科"張家豪醫生"旳護士, 對病人態度非常惡劣 前言 : 因為9月23日晚上,我在台中市的中友百貨跌倒受傷,回家後,身體感到很不舒服, 於是在9月24日晚上,前往中國附醫的中西醫結合科就診. 9月24日晚上, 跟診中西醫結合科的"張家豪醫生"的一位女護士, 對病人態度非常惡劣 如題,此位女護士年紀超過50歲, 身材很胖, 對我口出惡言,態度非常惡劣,好像我欠她三千萬一樣, 讓我非常的不高興, 勸她趕快向我道歉,我就原諒她, 不然我就要叫"蘋果日報"和"壹電視"的人來採訪. -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.223.240.17
→ SDNS:喔 09/25 02:37
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Mac要如何錄製影片?
Sep 24th 2013, 22:24
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