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Calculate Ietsat),VCE(cut-off)Icq and VCEQ if Bpc = 110 and VBE 0.7 V, %3D

Calculate Ietsat),VCE(cut-off)Icq and VCEQ if Bpc = 110 and VBE 0.7 V, %3D

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Q4(a) Figure Q4(a) shows a class A power amplifier circuit. 12V R1 RL 2 kn 25 A C2 Q1 10 uF V1 0.5 Vpp 1 kHz R2 1.2 kn R4 R3 www. 222 100 A C147 pF Figure Q4(a) Calculate Ie(sat), VCE(cut-of). Ico and VCEO if Bpc = 110 and VBE = (i) 0.7 V, (ii) Based on the answer in Q4(a)(i), illustrate the DC load line and mark the Q-point. (ii) Calculate the power efficiency for the circuit in Figure Q4(a). (b) The Class-AB power amplifier in Figure Q4(b) employs input buffer transistors Q, and Q2 to establish the required quiescent bias current. Q1, Q2, Q3 and Q4 are matched transistors. Compute an expression for the approximate current gain, A; = ° in term of R and R,. R AV RL Figure Q4(b) Page 3 of 6
Transcribed Image Text:Q4(a) Figure Q4(a) shows a class A power amplifier circuit. 12V R1 RL 2 kn 25 A C2 Q1 10 uF V1 0.5 Vpp 1 kHz R2 1.2 kn R4 R3 www. 222 100 A C147 pF Figure Q4(a) Calculate Ie(sat), VCE(cut-of). Ico and VCEO if Bpc = 110 and VBE = (i) 0.7 V, (ii) Based on the answer in Q4(a)(i), illustrate the DC load line and mark the Q-point. (ii) Calculate the power efficiency for the circuit in Figure Q4(a). (b) The Class-AB power amplifier in Figure Q4(b) employs input buffer transistors Q, and Q2 to establish the required quiescent bias current. Q1, Q2, Q3 and Q4 are matched transistors. Compute an expression for the approximate current gain, A; = ° in term of R and R,. R AV RL Figure Q4(b) Page 3 of 6
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