[考題] 電子學問題: @ 2016徵求年菜推薦網路訂購最紅的商家.年菜訂購?台北年菜外送餐廳推薦(年菜)?年菜.今年不想做年菜推薦,網路宅配哪一家好?

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[考題] 電子學問題

Apr 4th 2014, 19:34, by semmy214

作者semmy214 (陳山河)

看板Examination

標題[考題] 電子學問題

時間Fri Apr 4 19:34:25 2014

一負回授放大器，其回授電路純由電阻組成，其開迴路增益為 10^5 並具有三個極點頻率(Pole Frequency) 分別為 fa = 10^6 Hz, fb = 10^7 Hz, fc = 10^8 Hz 則此回授放大器的可能振盪頻率 (A) 低於 fa (B) 介於 fa~fb (C) 介於 fb~fc (D) 高於 fc 這題我不是很懂請高手解說 -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 59.102.142.175 ※ 文章網址: http://www.ptt.cc/bbs/Examination/M.1396611267.A.D2C.html

→ alan3340:個人覺得答案是(A)低於fa 04/04 19:47

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