Multiple choice

Given the ideal operational amplifier circuit shown in figure indicate the correct transfer characteristics assuming ideal diodes with zero cut-in voltage.

  1.

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B Correct answer
Explanation

$\text{Only one diode will be in ON conditions} \\ \text{When lower diode is in ON condition, then} \\ V_m = \frac{2k}{2.5k} V_{sat} = \frac{2}{2.5}10 = 8 V \\ \text{when upper diode is in ON condition} \\ V_m = \frac{2k}{2.5k} V_{sat} = \frac{2}{4}(-10) = -5 V$

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