Use mesh analysis to obtain values for ix and va in the circuit. 7Ω. να 9V 4Ω www Μ 0.2i, ΖΩ ΤΩ 4Ω + 0,1να

(b) Figure Q2(b) shows a BJT amplifier with ß = 120 and VBE = 0.7 V. (i) Calculate current, IB, IC and IE and output voltage, VCE for the circuit using exact analysis. (ii) Sketch the midband AC equivalent circuit using re model. (iii) Determine the input impedance, Zi, output impedance, Zo, voltage gain, Av and current gain, A; for the obtained answer in part Q2(b)(ii).

5. Given the following circuit, find RAB. RAB B 4 ΚΩ 4 ΚΩ www 8 ΚΩ ww 4 ΚΩ 2 ΚΩ 6 ΚΩ 12 ΚΩ , 12 ΚΩ 2 ΚΩ 9 ΚΩ 3 ΚΩ 512 ΚΩ 8 ΚΩ www 5 ΚΩ 4 ΚΩ www 8 ΚΩ 2 ΚΩ ΣΟΚΩ

Given circuit below and resistors value: Ra = 100 Q Rb = 150 Q Rc = 200 Q %3! R Ro Re 4 2. Determine the total resistance between terminal 1 and 3