Which factor determines the gain of the voltage series feedback amplifier?
A. Open loop voltage gain
B. Feedback voltage
C. Ratio of two resistors
D. Gain of feedback circuit
Answer:A
Which factor determines the gain of the voltage series feedback amplifier?
A. Open loop voltage gain B. Feedback voltage C. Ratio of two resistors D. Gain of feedback circuit
Explanation: In setting the gain of the voltage series feedback amplifier, the ratio of two resistors is important and not the absolute value of these resistors. For example: If a gain of 11 is desired, we choose R1=1kΩ and R1=10kΩ or R1=100Ω and RF= 1kΩ.