Determine the output resistance of differential amplifier with three op-amp. The op-amp used is 741c, with A=200000 and Ro. The output and difference of input voltages are 44 and 11.
A. 5.5mΩ
B. 3.5mΩ
C. 2.4mΩ
D. 1.5mΩ
Answer:A
Determine the output resistance of differential amplifier with three op-amp. The op-amp used is 741c, with A=200000 and Ro. The output and difference of input voltages are 44 and 11.
A. 5.5mΩ B. 3.5mΩ C. 2.4mΩ D. 1.5mΩ
Explanation: Gain AD = Vo/Vid = 44/11 =4.