申論題

2.(10%) Consider a circuit of Fig. 2 with a BJT device having β = 100 when it is biased in the active region. The constant voltage drop 0.7 V approximation can be used for the turn-on of a p-n junction, and the constant voltage drop ~ 0.2 V approximation can be used when the BJT is biased in the saturation region. Please calculate the collector current I_c and base current I_B. (5%*2)