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The circuit shown in the figure is that of

a. a non-inverting Amplifiers 

b. an inverting Amplifiers 

c. an oscillator 

d. a Schmitt trigger

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1 Answer

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 It is a Schmitt trigger circuit.

The circuit has positive feedback and in positive feedback, opamp operates in its saturation region. It is a fast operating voltage level detector.

The circuit switches between negative and positive output voltage levels (- Vsat to Vsat). 

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