Question 229: Semiconductors and Logic Gates

Question

The typical output characteristics curve for a transistor working in the common-emitter configuration is shown in the figure.The estimated current gain from the figure is __________.

Accepted Answer

For common emitter configuration
$$\beta $$ = $${{\Delta {I_C}} \over {\Delta {I_B}}} = {{\left( {4 - 2} ight)\,mA} \over {\left( {20 - 10} ight)\,\mu A}}$$
= $${2 \over {10}} 	imes {{{{10}^{ - 3}}} \over {{{10}^{ - 6}}}}$$ = 200

Semiconductors and Logic Gates

The typical output characteristics curve for a transistor working in the common-emitter configuration is shown in the figure.The estimated current gain from the figure is __________.

Choose the correct answer: