電子學 - 考試
By Damian
at 2013-05-04T15:05
at 2013-05-04T15:05
Table of Contents
[考題] 國考歷屆考題與考題觀念討論(書裡看到的選這個)請附上想法、出處
有一回授放大器之轉換函數 Af(S) = A(S)/(1 + A(S)Beta(S)), S = jw,
則當 A(S)Beta(S) 的相角為多少度時, 該回授放大器可能發生振盪?
答案是 -180度
小弟對振盪的題目都蠻苦手的, 只知道如果要起振的話要正回授
請問這題要怎麼解呢
感謝
--
有一回授放大器之轉換函數 Af(S) = A(S)/(1 + A(S)Beta(S)), S = jw,
則當 A(S)Beta(S) 的相角為多少度時, 該回授放大器可能發生振盪?
答案是 -180度
小弟對振盪的題目都蠻苦手的, 只知道如果要起振的話要正回授
請問這題要怎麼解呢
感謝
--
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考試
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