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The voltage across the diode Vout if Vin is -5V and resistance is 10K is? (Use constant voltage drop model of diode and take VD as 0.5V)(a) -3V(b) 0V(c) -5V(d) -2.5VThis question was posed to me during an online exam.My question is from Constant Voltage Drop Model-1 topic in portion Diode Circuit of Analog Circuits

Answer»

Correct answer is (c) -5V

To explain I would SAY: In constant voltage drop model at FORWARD bias diode can be replaced as a cell and in reverse bias diode can be avoided by CONSIDERING the terminals are open.

Since diode is reverse BIASED ENTIRE voltage will appear across diode.



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