Question 142: Semiconductors and Logic Gates

Question

The transfer characteristic curve of a transistor, having input and output resistance 100 $$\Omega $$ and 100 k$$\Omega $$
respectively is shown in the figure. The voltage and power gain, are respectively:

Accepted Answer

$${V_{gain}} = \left( {{{\Delta {I_C}} \over {\Delta {I_B}}}} ight){{{R_{out}}} \over {{R_{in}}}} = \left( {{{5 	imes {{10}^{ - 3}}} \over {100 	imes {{10}^{ - 6}}}}} ight) 	imes {10^3}$$
$$ = {1 \over {20}} 	imes {10^8} = 5 	imes {10^4}$$
$${P_{gain}} = \left( {{{\Delta {I_C}} \over {\Delta {I_B}}}} ight)\left( {{V_{gain}}} ight)$$
$$ = \left( {{{5 	imes {{10}^{ - 3}}} \over {100 	imes {{10}^{ - 6}}}}} ight) 	imes \left( {5 	imes {{10}^4}} ight)$$
$$ = 2.5 	imes {10^6}$$

Answer

5 × 10
4
, 5 × 10
5

Answer

5 × 10
4
, 5 × 10
6

Answer

5 × 10
4
, 2.5 × 10
6

Answer

2.5 × 10
4
, 2.5 × 10
6

Semiconductors and Logic Gates

The transfer characteristic curve of a transistor, having input and output resistance 100 $\Omega and 100 k\Omega $ respectively is shown in the figure. The voltage and power gain, are respectively:

Choose the correct answer: