1.

The output voltage V if Vin = 3V, R=5KΩ, VB = 2V in a ideal diode is __________(a) 1V(b) 4V(c) 3V(d) 2VI have been asked this question in an online interview.My query is from Ideal Diode Model topic in portion Diode Circuit of Analog Circuits

Answer»

The correct CHOICE is (c) 3V

To explain I would say: In ideal diode model the diode is considered as a PERFECT conductor in forward bias and perfect insulator in reverse bias. That is VOLTAGE drop at forward bias is zero and CURRENT through the diode at reverse bias is zero.

The diode above is reverse biased and IDEALLY can be considered as an open circuit. So output is the voltage Vin = 3V.



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