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[单选题]
差分放大电路如图所示,设β1=β2=60,rbe1=rbe2=1kΩ,RW=2kΩ,其滑动端调在RW/2处,RC1=RC2=10kΩ, Re=5.1kΩ,Rb1=Rb2=2kΩ,+VCC=+12V,-VEE=-12V。求Ro。
差分放大电路如图所示,设β1=β2=60,rbe1=rbe2=1kΩ,RW=2kΩ,其滑动端调在RW/2处,RC1=RC2=10kΩ, Re=5.1kΩ,Rb1=Rb2=2kΩ,+VCC=+12V,-VEE=-12V。求Ro。
A.22 kΩ
B.12 kΩ
C.6 kΩ
D.18 kΩ
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