Q. The magnitude of the product of open loop gain of the amplifier and the magnitude of the feedback factor is __
Solution:
- Barkhausen criterion are a set of two mathematical conditions which a linear electronic circuit must follow to act as an electronic oscillator. Barkhausen’s criterion applies to linear circuits with a feedback loop.
- It cannot be applied directly to active elements with negative resistance like tunnel diode oscillators.
- The kernel of the criterion is that a complex pole pair must be placed on the imaginary axis of the complex frequency plane if steady state oscillations should take place.
- It needs to have positive feedback.
- The loop gain is at unity. That is the magnitude of the product of open loop gain and the magnitude of the feedback factor is unity.
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