A. A Wien-Bridge oscillator with a lead-lag circuit is shown in Figure 1. 6.8 V 6.8 V Ry 47 k 100 ki Vaut 0.0iš uF 1.0 k Rs 1.0 kn C 0.015 uF Figure 1 (1) Determine the necessary value of R2 so that the circuit will oscillate. Neglect the forward resistance of D: and D2. (ii) Calculate the start-up closed-loop gain of the amplifier. (iii) Explain the purpose of R, D; and Dz. (iv) Explain the disadvantage of using Zener diode to control gain. (v) Without the back-to-back Zener diode, suggest R, values and find the frequency of oscillation.

A. A Wien-Bridge oscillator with a lead-lag circuit is shown in Figure 1. 6.8 V 6.8 V Ry 47 k 100 ki Vaut 0.0iš uF 1.0 k Rs 1.0 kn C 0.015 uF Figure 1 (1) Determine the necessary value of R2 so that the circuit will oscillate. Neglect the forward resistance of D: and D2. (ii) Calculate the start-up closed-loop gain of the amplifier. (iii) Explain the purpose of R, D; and Dz. (iv) Explain the disadvantage of using Zener diode to control gain. (v) Without the back-to-back Zener diode, suggest R, values and find the frequency of oscillation.

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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