GATE EC 2014 Set 2 — Question 21
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Analog Circuits → Feedback & Oscillators → Negative Feedback Topologies
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Question
The feedback topology in the amplifier circuit ( the base bias circuit is not shown for simplicity) in the figure is
Correct answer
(B) Current series feedback
Solution
In the given circuit, the feedback is taken from the emitter. This samples the output current (current sampling). The feedback voltage across is in series with the input signal at the base (series mixing). Therefore, the topology is current-series feedback.
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