申論題

1.計算題(10分) Figure P1 shows the BJT amplifier with a current gain βof BJT is 100, thermal voltage V_T = 25 mV and collector current. Assume that when is 0.7 V, lc is 1 mA. When V_c is -5 V, design R_E and Rcto make Ic equal to 4 mA. Note the answer must be rounded to two decimal places. (R_E與R_c各5 分)