103鐵路特考電子學大意兩題請教 - 特考
By Harry
at 2015-01-19T22:56
at 2015-01-19T22:56
Table of Contents
大大們好
在這邊想請教103鐵特兩個問題
http://goo.gl/kIiKCR
想請教21 32題
21題我的理解是
(Vb-0.7) x B Vcc-0.2
-------------- > ------------
RE x (1+B) RC + RE
能讓左邊越大於右邊,就會越靠近工作區
所以我不是很能理解為何不是B ....
--------------------------------------------------------
32題我的理解是
韋恩橋式振盪器,應該是電橋振盪器不是嗎@@?
電橋震盪器,我記得應該有正回授會讓輸出變成至少是矩形波
然後用負回授的RC相移去調應該可以變成方波輸出
所以我還是不太能理解為什麼不是D ....
有大大可以幫忙解題嗎?
感激不盡了...
--
Tags:
特考
All Comments
By Elma
at 2015-01-24T09:58
at 2015-01-24T09:58
By Rae
at 2015-01-25T18:16
at 2015-01-25T18:16
By Dinah
at 2015-01-27T13:16
at 2015-01-27T13:16
By Gilbert
at 2015-01-31T14:35
at 2015-01-31T14:35
Related Posts
Re: 警專畢業可以考鑑識嗎
By Genevieve
at 2015-01-19T22:27
at 2015-01-19T22:27
相當普通考試之特種考試?
By Frederic
at 2015-01-19T20:49
at 2015-01-19T20:49
請問是該兼職還全職工作
By Genevieve
at 2015-01-19T18:42
at 2015-01-19T18:42
2013 地特三等資訊處理落榜心情
By Andy
at 2015-01-17T20:40
at 2015-01-17T20:40
鐵路特考佐級 參考書選購
By Ophelia
at 2015-01-17T17:34
at 2015-01-17T17:34