Modern Physics 6 Question 9
9. In the figure, given that supply can vary from 0 to , and . The minimum base current and the input voltage at which the transistor will go to saturation, will be, respectively
(Main 2019, 12 Jan II)
(a)
(b)
(c)
(d)
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Solution:
- Transistor saturation occurs when
.
Now, for closed loop of collector and emitter by
Kirchhoff’s voltage rule, we have
Now,
Now, we apply Kirchhoff’s voltage rule in base-emitter closed loop, we get