Question

Which feedback configuration is commonly used for voltage amplifiers?

• A. Current-series
• B. Voltage-series
• C. Current-shunt
• D. Voltage-shunt

Hint:

Feedback types: \[ \boxed{ \begin{aligned} \text{Voltage amplifier} &\rightarrow \text{Voltage-series} \text{Current amplifier} &\rightarrow \text{Current-shunt} \end{aligned} } \]

Answer 1

The Correct Option is B

Step 1: Recall the feedback configurations. The four basic feedback topologies are \[ \begin{aligned} &\text{Voltage-series}, &\text{Voltage-shunt}, &\text{Current-series}, &\text{Current-shunt}. \end{aligned} \]

Step 2: Identify the configuration used for voltage amplifiers. Voltage amplifiers require voltage sampling at the output and series mixing at the input. Hence, \[ \boxed{\text{Voltage-series feedback}} \] is commonly used. Therefore, \[ \boxed{(B)} \] is the correct answer.