Vcc=15VQ1: BC237RB220kOor BC238B=200VBE(on)=0.7VCciRs100Ω 4.7μFVsRE1.2kOCco4.7µFRL1000RinRoutFigure 2. Common-collector amplifier(emitter follower). 2. Build the emitter-follower circuit given in Figure 2. Verify that the functiongenerator output is still set to 1 Vp-p, 1 KHz, and repeat the steps 1.a, 1.b, and 1.c.2.a) Measure the voltage gain, Ay.Vsp-p =Vop-p =Ay =2.b) Determine the current gain, A¡.VrSp-pVRLP-p =Isp-p =ILp-p =A¡ =2.c) Disconnect R and measure the input resistance, Rin:Vsp-p =VRSp-p =Isp-p =Rin =2.d) Increase Vs amplitude to 2.0 Vp-p and observe vo on the oscilloscope. How doyou explain the distortion in the vo waveform?

Answered: Vcc=15V RB 220k or BC238 B=200…

Vcc=15V RB 220k or BC238 B=200 VBE(on)=0.7V Cci Rs 100Ω 4.7μ Q1 Vo Vs RE 1.2ko Cco 4.7µF RL 1000 Rin Rout Figure 2. Common-collector amplifier (emitter follower).

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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Question

Vcc=15V
Q1: BC237
RB
220kO
or BC238
B=200
VBE(on)=0.7V
Cci
Rs
100Ω 4.7μF
Vs
RE
1.2kO
Cco
4.7µF
RL
1000
Rin
Rout
Figure 2. Common-collector amplifier
(emitter follower).

2. Build the emitter-follower circuit given in Figure 2. Verify that the function
generator output is still set to 1 Vp-p, 1 KHz, and repeat the steps 1.a, 1.b, and 1.c.
2.a) Measure the voltage gain, Ay.
Vsp-p =
Vop-p =
Ay =
2.b) Determine the current gain, A¡.
VrSp-p
VRLP-p =
Isp-p =
ILp-p =
A¡ =
2.c) Disconnect R and measure the input resistance, Rin:
Vsp-p =
VRSp-p =
Isp-p =
Rin =
2.d) Increase Vs amplitude to 2.0 Vp-p and observe vo on the oscilloscope. How do
you explain the distortion in the vo waveform?

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