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GATE 2014 EC (EC2) – Question 21

Analog Circuits · BJT and MOSFET Amplifiers · 1 mark · Multiple choice

Identify the feedback topology of the amplifier shown. Base-bias circuitry is omitted for simplicity.

Diagram for GATE 2014 EC (EC2) question 21
  1. Voltage shunt
  2. Current series
  3. Current shunt
  4. Voltage series

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Show answer and explanation

Correct answer: (B) Current series

Explanation

The emitter resistor develops a feedback voltage proportional to emitter current, which closely tracks collector/output current. This voltage subtracts in series from the applied base-emitter input voltage. The circuit therefore samples current and mixes a series voltage: **current-series feedback,B**.