This document discusses various theorems and methods for analyzing DC circuits, including: - Kirchhoff's laws for analyzing circuits using voltage and current - Thevenin's theorem, which replaces a complex network at two terminals with a voltage source and resistor - Norton's theorem, which is the dual of Thevenin's theorem and replaces a network with a current source and parallel resistor - Methods for analyzing circuits including direct analysis, network reduction, mesh analysis, and nodal analysis.

1. Chapter # 2
DC NETWORK THEOREMS

2. Some Terminologies

4. Two Approach
• Direct Method
• Network Reduction Method

5. Direct Method

6. Network Reduction Method

7. Kirchhoff’s Law

8. Kirchhoff Point Law/ Current Law (KCL)

9. Kirchhoff Point Law/ Current Law (KCL)

10. Kirchhoff Mesh Law/ Voltage Law (KVL)

11. Kirchhoff Mesh Law/ Voltage Law (KVL)

12. Related Examples
• 2.3-2.7
• 2.19

13. Determination Of Voltage Sign
Sign of Battery E.M.F

14. Determination Of Voltage Sign
Sign of Battery IR Drop

15. Independent Sources

16. Dependent Sources

17. Maxwell’s Loop Current Method

18. Mesh Analysis Using Matrix Form

19. Mesh Analysis Using Matrix Form

20. Mesh Analysis Using Matrix Form

21. Related Examples
• 2.30 – 2.33

22. Nodal Analysis with Sources

23. Source Conversion

24. Ideal Constant Voltage Source

25. Ideal Constant Current Source

26. Thevenin Theorem
• It provides a mathematical technique for replacing a given network,
as viewed from two output terminals, by a single voltage source with
a series resistance. It makes the solution of complicated networks
(particularly, electronic networks) quite quick and easy. The
application of this extremely useful theorem will be explained with
the help of the following simple example.

27. How to Thevenize a Circuit?
• When Circuit Contains Dependent & Independent Source
Example 2.81
• When Circuit contains Dependent sources only
Example 2.83

28. Norton’s Theorem
This theorem is an alternative to the Thevenin's theorem. In fact, it is
the dual of Thevenin's theorem. Whereas Thevenin's theorem reduces
a two-terminal active network of linear resistances and generators to
an equivalent constant-voltage source and series resistance, Norton's
theorem replaces the network by an equivalent constant-current
source and a parallel resistance.

29. How to Nortonize a Circuit?
• When Circuit Contains Dependent & Independent Source
• When Circuit contains Dependent sources only

30. Node Analysis & Norton Theorem
• Remaining
• On white board