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Question

# Consider the diode circuit shown in the figure below: The input output characteristic curve of the circuit can be represented as (Assume cut-in voltage of diode D1 and D2 is equal to 0.7 V)

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Solution

## The correct option is C Case I : For−0.7 V<Vin<5.7~V Both Diode D1 and D2 will be OFF and output will be equal to zero. Case II : For Vin>5.7 V Diode D2=ON and D1= OFF, thus the circuit can be redrawn as thus, Vin=Vout+5.7 V, hence slope = 1 (for values of output voltages greater than 5.7 V) Case III : When Vin<−0.7 V Then D1 will be ON and D2=OFF Hence, the circuit will be redrawn as hence, V0=Vin×12−0.7 V Hence, Slope =12 and cut-off voltage =0.7 V

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