- Problem 4 Give The Common Emitter Amplifier Below With Vcc 15 V R R2 230 K Rc 1 K 2 Rai 440 2 Re2 450 22 A 1 (62.44 KiB) Viewed 39 times
Problem 4 Give the Common Emitter Amplifier below with Vcc= 15 V, R= R2 =230 k, Rc = 1 k 2, Rai = 440 2, Re2 = 450 22, and Rz = 9 k 2 with B = 100, VBE=0.6 V, V1=0.025 V n=1, ro=00, 1. Draw the circuit for DC analysis and obtain values for IsQ, Ico, VceQ , RDC, and rz. Is the BJT operating in FA region? 2. Draw the ac small signal equivalent circuit and find values for Rac , the ac voltage gain Ay, and the input resistance Rin 3. What is the value of Rpc, Rac and A, if we remove the emitter bypass capacitor CE ? 4. Based on 3. and 2. What is the role of Cg in the DC circuit and in the ac circuit? +Vec +Vcc C + R WY w REL U R W w w 카 RE CE 0 (a) Actual circuit