32% 13:33 3:43 PM 98 SREE-problems-1.pdf Q 64% Question 1: Consider the amplifier circuit shown below using a Bipolar Transistor with ẞ=125. (15 marks) 15 R2 R5 ww 1k C2 12 22u Vin 47k www w R3 22k ·ឌ R1 3.3k C1 Vout HH 22u 2.2k មិន C3 R4 4.7k 47u R6 (i) (ii) Perform DC analysis to find the transistor's operating point (VCE, IC) (5 marks) Calculate the small-signal voltage gain (Vout/Vin) (5 marks) (iii) State what is true and what is false from the following statements. Justify your answer with calculations when needed (5 marks) (a) the gain of this amplifier will increase if R5 is reduced to 5092 (b) the gain will increase more if R4-100k is used. (c) removing C3 will have no effect on the gain (d) C1 and C2 are DC coupling capacitors (e) the amplifier gain does not depend on the frequency of the input signal Vin. Question 2: Analyze 3 of the circuits below (5 marks each) Abdelbagi Mth Dec 25 at 15:43 R₁ V11 www R2 V12 12 R3 Ry 1 of 2 να ↓ NO32% 13:33 64% 3:43 PM V12' + VI1' w R2 RF www R2 12 W RF1 RF2 www R3 R₁ VI1 vo V01 Abdelbagi Mth Dec 25 at 15:43 www RF1 V01 R₁ RF2 V02 2 of 2