[問題] 關於inverting amplifier已刪文
這一題說op amp的fu=10^7Hz，我就想到要用op amp接成回授後GB不會變的特性來解，不
過後來看了林昀的書，因為此回授接法的初傳輸入率是-R2/(R1+R2)，所以回授後的GB是f
u乘上R2/(R1+R2)，可是b小題的GB值就已經大於原本op amp的fu了.....，請問是我哪裡
觀念不對嗎？
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