Question

Ge and Si diodes start conducting at 0.3 V and 0.7 V respectively. In the following figure if Ge diode connection are reversed, the value of $V_o$ changes by : (assume that the Ge diode has large breakdown voltage)

• A. 0.6 v
• B. 0.8 V
• C. 0.4 V
• D. 0.2 V

Answer 1

The correct option is C 0.4 V

For shown case

$Vo=12-0.3=11.7$

In the second case

$Vo=12-0.7=11.3$

So difference$=11.7-11.3$

$=0.4V$ is observed.