1. Network Analysis Techniques & Theorems
Module II
Network Analysis Techniques & Theorems .

2. At the end of this chapter, students should be able to
Learning Outcome
At the end of this chapter, students should be able to
Learn network analysis techniques
Learn network theorems and its application to analyse networks
The learning outcome of the introductory is appended on the slide in more detail in point form

3. From syllabus for Module II
Introduction
Basic Electric Laws
Ohms law
Kirchoff’s laws
Voltage and Current Division rules
Nodal analysis
Mesh analysis
Star - Delta transformation
Source transformation

4. From syllabus for Module II
Network theorems
Thevenin’s
Superposition
Norton
Reciprocity

5. Lession I
Ohm’s Law

6. From syllabus for Lession I
Introduction
Building Electric Circuits
Ohm’s Law
Resistances in series and parallel
Application of Ohm’s Law

7. Basic Circuit Components
We represent real electrical components with symbols
1.5 V
1.5V
A Battery…
…can be represented with this symbol
…called a “DC voltage source”
A DC Voltage Source
Provides Power for our circuit
Battery or Lab ‘power supply’ is an example
DC voltage is supplied across the two terminals
Its voltage is VOLTS (V)

8. Basic Circuit Components
We represent real electrical components with symbols
A Resistor
Represents any device that requires power to operate
Could be a light bulb, your computer, a toaster, etc.
Each device has a certain amount of ‘resistance’, R, in
the unit called: OHMS (Ω)
A Light Bulb…or any ‘device’…
R Ω
…can be represented with this symbol
…called a “resistor”

9. Basic Circuit Components
We represent real electrical components with symbols
The Ground
Represents 0 volts
We use it as a ‘reference’ voltage…to measure other
voltages against it
The ‘Earth’ is at 0 volts, so we call this ground
The Earth…
…can be represented with this symbol
…called the “ground” symbol

10. Building a Circuit… We wish to ‘power’ our flashlight’s light bulb…
We need a battery…
1.5 V
We need to attach the light bulb to the battery…
We use wires to connect the light bulb to the battery…
Instead…let's represent the real components with their symbols

11. Building a Circuit… creating a schematic
Replace the battery with a ‘DC Voltage Source’ symbol
Replace the light bulb with a ‘Resistor’ symbol
1.5 V
1.5V
.5 Ω
Mark the symbol’s values (V=, R=, etc.)
Since this “node” is at GND (OV) this node
must be 1.5Volts higher
Add the Ground reference 0V
Instead…let's represent the real components with their symbols

12. Circuit Symbols Component Name Symbol Battery Joined wires
Variable resistor
Fuse
Earth
Capacitor
Thermistor
Light dependent resistor
Light emitting diode

13. OHM’S LAW

14. Ohm’s Law and Electrical Quantities
Ohm’s Law states that it takes one volt to push one ampere through one ohm.
E = Volts
E = I x R
R = Resistance
I = Amps

15. Ohm’s Law and Electrical Quantities
Using the Ohm’s law chart.
E = I x R
I = E / R
R = E / I

16. Ohm’s Law and Electrical Quantities
Adding P (watts) to the Ohm’s law chart.
I =
I = P / E
I = E / R
P = E2 / R
P = E x I
P = I2 x R
Ohm’s Law
R = E / I
R = P / I2
R = E2 / P
E =
E = I x R
E = P / I