Analog Electronics - ECE Questions and Answers

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For a system to work, as oscillator the total phase shift of the loop gain must be equal to

90°

45°

270°

360°

Answer : Option D

Explanation :

Gain of system with + ve feedback = for oscillation

but V₀ ≠ 0

so, that 1 - AB = 0 AB = 1 ∠0° or 360°.

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