Question 208: Semiconductors and Logic Gates

Question

The typical transfer characteristics of a transistor in CE configuration is shown in figure. A load resistor of $$2 \,k \Omega$$ is connected in the collector branch of the circuit used. The input resistance of the transistor is $$0.50 \,\mathrm{k} \Omega$$. The voltage gain of the transistor is ______________.

Accepted Answer

V
gain
= Current gain $$	imes$$ $${{{R_L}} \over {{R_i}}}$$
$$ = {{\Delta {I_C}} \over {\Delta {I_B}}} 	imes {{{R_L}} \over {{R_i}}}$$
$$ = {{5 	imes {{10}^{ - 3}}} \over {100 	imes {{10}^{ - 6}}}} 	imes {{2 	imes {{10}^3}} \over {0.5 	imes {{10}^3}}} = {{10} \over {0.5}} 	imes 10 = 200$$

Semiconductors and Logic Gates

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