5. Calculate the theoretical minimum value of RL required for putting the zener diode in the zener breakdown region for the regulator circuit of Fig.8. What value of load resistance results in the maximum zener current? Determine the maximum zener current Izimax) in this case and compare it with IzM-
5. Calculate the theoretical minimum value of RL required for putting the zener diode in the zener breakdown region for the regulator circuit of Fig.8. What value of load resistance results in the maximum zener current? Determine the maximum zener current Izimax) in this case and compare it with IzM-
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter30: Dc Motors
Section: Chapter Questions
Problem 6RQ: What is CEMF?
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Question
![4. For the zener diode voltage regulator circuit of Fig.8, sketch the relation between V
and IL (VL versus I). Plot the relation between Is and R. Sketch also the relation
between Iz and I. Comment on the resulting curves.
5. Calculate the theoretical minimum value of R required for putting the zener diode in
the zener breakdown region for the regulator circuit of Fig.8. What value of load
resistance results in the maximum zener current? Determine the maximum zener
current Iz(mar) in this case and compare it with IZM.
6. Plot the relation between V and Vin for the voltage regulator circuit in Fig.9, and
comment on the resulting sketch. From this sketch, determine the minimum value of
input voltage required to turn-on the zener diode.
7. Calculate the theoretical minimum value of Vin required to turn-on the zener diode in
the voltage regulator circuit of Fig.9. Determine also the maximum permissible value
of Vin knowing that the maximum DC power dissipation of the BZX55C5V1 zener
diode is 0.5W.
8. Explain the difference between line regulation and load regulation.
Rs
mA
330 0,
2W
V
15V
R
BZX55C5V1
5.1V Zener
Figure 8: Practical Circuit for Zener Diode Voltage Regulator with Variable Load Resistor
mA
330 0,
Va
R
0- 15V
V.
1kn,
2W
BZX55C5V1
5.1V Zener
Figure 9: Practical Circuit for Zener Diode Voltage Regulator with Variable Input Voltage](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9b635c53-c087-4c6f-bb02-3bddf0f4b5f0%2Fead12d18-b9b2-4abe-ae4c-903b548b1a31%2Fsy63u7_processed.jpeg&w=3840&q=75)
Transcribed Image Text:4. For the zener diode voltage regulator circuit of Fig.8, sketch the relation between V
and IL (VL versus I). Plot the relation between Is and R. Sketch also the relation
between Iz and I. Comment on the resulting curves.
5. Calculate the theoretical minimum value of R required for putting the zener diode in
the zener breakdown region for the regulator circuit of Fig.8. What value of load
resistance results in the maximum zener current? Determine the maximum zener
current Iz(mar) in this case and compare it with IZM.
6. Plot the relation between V and Vin for the voltage regulator circuit in Fig.9, and
comment on the resulting sketch. From this sketch, determine the minimum value of
input voltage required to turn-on the zener diode.
7. Calculate the theoretical minimum value of Vin required to turn-on the zener diode in
the voltage regulator circuit of Fig.9. Determine also the maximum permissible value
of Vin knowing that the maximum DC power dissipation of the BZX55C5V1 zener
diode is 0.5W.
8. Explain the difference between line regulation and load regulation.
Rs
mA
330 0,
2W
V
15V
R
BZX55C5V1
5.1V Zener
Figure 8: Practical Circuit for Zener Diode Voltage Regulator with Variable Load Resistor
mA
330 0,
Va
R
0- 15V
V.
1kn,
2W
BZX55C5V1
5.1V Zener
Figure 9: Practical Circuit for Zener Diode Voltage Regulator with Variable Input Voltage
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