Question 224: Semiconductors and Logic Gates

Question

A transistor is connected in common emitter circuit configuration, the collector supply voltage is 10 V and the voltage drop across a resistor of 1000 $$\Omega$$ in the collector circuit is 0.6 V. If the current gain factor ($$\beta$$) is 24, then the base current is _____________ $$\mu$$A. (Round off to the Nearest Integer)

Accepted Answer

$$\beta  = {{{I_C}} \over {{I_B}}} = 24;$$
R
C
= 1000
$$\Delta$$V = 0.6
$${I_C} = {{0.6} \over {1000}}$$
I
C
= 6 $$	imes$$ 10
$$-$$4
$${I_B} = {{{I_C}} \over \beta } = {{6 	imes {{10}^{ - 4}}} \over {24}} = 25\mu A$$

Semiconductors and Logic Gates

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