QUESTION 20: The output stage in the following Figure is a Darlington pair emitter-follower configuration. Assume ß= 115 for all npn transistors and ß = 65 for all pnp transistors. Let V47 = 140 V for Q7, V411 = 148 V for Q11, and VA = ∞ for all other transistors. Calculate the small-signal resistance looking into the emitters of Q9 and Qg, i.e. Reg and Res, respectively. Hence, determine the output resistance Ro Reg (kn) Format : 9.92 Re8 (2) Format: 74.4 R₂ (2) Format: 22.67 V+ 26 V™ Bias - R, = 0.2 kΩ 27 29 = 0.2 mA ¹₂=0 eu 28 1c8= 1 mA I Ro OVO R₁ = 5 k

QUESTION 20: The output stage in the following Figure is a Darlington pair emitter-follower configuration. Assume ß= 115 for all npn transistors and ß = 65 for all pnp transistors. Let V47 = 140 V for Q7, V411 = 148 V for Q11, and VA = ∞ for all other transistors. Calculate the small-signal resistance looking into the emitters of Q9 and Qg, i.e. Reg and Res, respectively. Hence, determine the output resistance Ro Reg (kn) Format : 9.92 Re8 (2) Format: 74.4 R₂ (2) Format: 22.67 V+ 26 V™ Bias - R, = 0.2 kΩ 27 29 = 0.2 mA ¹₂=0 eu 28 1c8= 1 mA I Ro OVO R₁ = 5 k

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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