作者Qmmmmnn (Qmmmmmmmmm)
看板Physics
標題[題目] 電子學簡單例題
時間Mon Sep 20 00:50:20 2010
[領域]電子學 (題目相關領域)
[來源]smith p20 ch1 (課本習題、考古題、參考書...)
[題目]
An amplifier operating from a single 15-V supply provides a 12-V peak-to-peak
sine-wave signal to a 1-kΩ load and draws negligible input current from
the signal source. The dc current drawn from the 15-V supply is 8mA.
What is the power dissipated in the amplifier, and what is the amplifier
efficiency?
[瓶頸] (寫寫自己的想法，方便大家為你解答)
從題目可得
Vcc = 15(V)
Icc = 8(mA)
Vo = 12/√2(V)
Io = 12/√2(mA)
RL = 1kΩ
因為能量守恆，所以ViIi + 15*8 = (12/√2)(12/√2) + P(dis)
但是我不知道Vi跟Ii...=.="
所以我不知道該怎麼算....
很怕是自己看錯題目..@@"
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