This document discusses source transformation examples in network theory. It begins with key points about applying source transformation to practical sources. Next, it outlines the procedure for simplifying electrical networks using source transformation and source shifting. The remainder of the document works through examples of simplifying circuits using these techniques to obtain equivalent single voltage or current sources between load terminals. It concludes with a practice problem and disclaimer about content taken from other sources.

1. Network Theory(19EC33)
2020-21
Class-3: Source Transformation - Examples
MOHANKUMAR V.
ASSISTANT PROFESSOR
D E P A R TM E N T O F E L E C TR O N I C S A N D C O M M U N I C A TI O N E N G I N E E R I N G
D R . A M B E D K A R I N S TI TU TE O F TE C H N O L O G Y , B E N G A L U R U - 5 6
E - M A I L : MO H A N K U MA R . V @ D R - A I T . O R G

2. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Source Transformation
Key Points
1. Source Transformation is applicable to Practical sources only.
2. Ignore the resistors that are connected across ideal voltage sources.
3. Ignore the resistors that are connected in series with ideal Current sources.
4. While converting practical current source into practical voltage source, polarity of voltage
source is always positive terminal at the arrow head and negative terminal at the other
side.
5. While converting practical voltage source into practical current source, polarity of current
source i.e., arrow head of current source must be indicated at the positive terminal of the
voltage source.

3. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Source Transformation
Procedure to simplify the electrical networks/Circuits
1. Identify the load element, remove the load element and name the load terminals as A and B
or X and Y etc.
2. Reduce the ideal voltage sources, that are connected in series.
3. Reduce the ideal current sources, that are connected in parallel.
4. Apply Source transformation.
5. Apply Source shifting.
6. Repeat the steps 2 to 5 until simplified form is obtained between the load terminals.
7. Connect the load element and find the load current or load voltage or power delivered or
absorbed by the load element.

4. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples

5. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples

6. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples

7. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples

8. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples

9. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples

10. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples

11. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples

12. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples

13. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples

14. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples

15. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples

16. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples

17. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples
3. Obtain the single practical current source between the terminals A and B

18. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples
3. Obtain the single practical current source between the terminals A and B

19. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples
3. Obtain the single practical current source between the terminals A and B

20. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples
3. Obtain the single practical current source between the terminals A and B

21. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Examples
4. Practice Problem

23. Dept. of ECE, Dr. Ambedkar Institute of Technology, Bengaluru
Network Theory (19EC33)
Disclaimer
Some Contents and Images showed in this PPT
have been taken from the various internet
sources for educational purpose only.
Thank You
?