## Analog Electronic Circuits

### Oscillators

**4 out of 10**

Explain why positive feedback and not negative feedback is necessary to produce oscillations?

In negative feedback, the feedback factor *βA *is less than unity. Therefore, *β**AV*_{in} is less than *V _{in}*

_{ }and so the output signal will die out. In positive feedback, the feedback factor

*β*

*A*is greater than unity. As

*β*

*AV*

_{in}is greater than

*V*, an oscillation output signal will be generated.

_{in}

##
Oscillators Flashcard List

**10**flashcards

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