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For the common-emitter amplifier in [Figure 4-17(a)], biased at ICQ = 1.0 mA, find the time constant τE and the lower cutoff frequency fL due to the bypass capacitor CE. Assume Rs = 0.2 kΩ, RE = 4.3 kΩ, RC = 5 kΩ, CE = 50 μF, βo = 152, VCC = 10 V. Assume ro = ∞ and ignore the influence of bias resistors R1 and R2.

For the common-emitter amplifier in [Figure 4-17(a)], biased at ICQ = 1.0 mA, find the time constant τE and the lower cutoff frequency fL due to the bypass capacitor CE. Assume Rs = 0.2 kΩ, RE = 4.3 kΩ, RC = 5 kΩ, CE = 50 μF, βo = 152, VCC = 10 V. Assume ro = ∞ and ignore the influence of bias resistors R1 and R2.For the common-emitter amplifier in [Figure 4-17(a)], biased at ICQ = 1.0 mA, find the time constant τE and the lower cutoff frequency fL due to the bypass capacitor CE. Assume Rs = 0.2 kΩ, RE = 4.3 kΩ, RC = 5 kΩ, CE = 50 μF, βo = 152, VCC = 10 V. Assume ro = ∞ and ignore the influence of bias resistors R1 and R2.

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For the common-emitter amplifier in [Figure 4-17(a)], biased at I C Q = 1.0 m A , find the time constant τ E and the lower cutoff frequency f L due to the bypass capacitor C E . Assume R s = 0.2 k Ω , R E = 4.3 k Ω , R C = 5 k Ω , C E = 50 μ F , β o = 152 , V C C = 10 V . Assume r o = ∞ and ignore the influence of bias resistors R 1 and R 2 .

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9.14. (a) Draw the low-frequency ac and midband equivalent circuits for the common-base amplifier in Fig.P9.14. if Rl = 75 Ω, RE = 4.3 kΩ, RC = 2.2 kΩ, R3 = 51 kΩ, and β0 = 100. (b) Write an expression for the transfer function of the amplifier and identify the location of the two low-frequency poles and two low-frequency zeros. Assume r0 = ∞ and the Q-point = (1.5 mA, 5 V). (c) What are the midband gain and lower cutoff frequency of the amplifier? (d) What are the values of −VEE and VCC? (e) What are the lower-cutoff frequency and midband gain of the amplifier if RE = 430 kΩ, RC = 220 kΩ, R3 = 510 kΩ, and the Q-point is (15 μA, 5 V) ? (f) What are the values of −VEE and VCC in part (e)?

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