Question B.2 For the circuit given in Fig. QB2, VC-15V, Rs = 100, R1 = 50 kO, Rc = 3000, Rbe - 100, and gm = 0.55. i. De
Posted: Mon May 09, 2022 7:36 am
Question B.2 For the circuit given in Fig. QB2, VC-15V, Rs = 100, R1 = 50 kO, Rc = 3000, Rbe - 100, and gm = 0.55. i. Describe, with the aid of suitable diagrams, how the input signal can be amplified by this circuit in Fig. QB2. [4 Marks) ii. What is the function of Cin and Cout? [4 Marks) iii. Determine the DC value of lb, ic, le, Vb, Vc and Vout. [6 Marks) iv. Sketch the small signal equivalent AC circuit at midband. [5 Marks) What is the effect of increasing Rs on the voltage gain at midband? Explain why the resulting effect will occur. [6 Marks) w Vcc ylc V. RC Cout Rs R10 VCH Vb Ib Cin Ve le II Vout Vin Fig. QB2 April/May 2022 Page 6 of 8