If you are an electrical engineering student, you cannot escape from learning the circuit theory. Circuit theory is a fundamental theorem for student need to know. It seems to be like ‘ABC’ for kindergarten kids to learn. When they grow up, ‘ABC’ is become fundamental for them when they start to learn how to write and read as well.

If you are expert in circuit theory, you will find others high level subject easy for you to understand. At that particular time, you can feel the entire theorem as easy as ‘ABC’ if and only if you are expert in circuit theory. Therefore, that why circuit theory is one of the fundamental subjects that have been teach in the first year studies.

For that reason, I feel a pleasure to share my knowledge to all of you in this particular theory. For your information, I am a university lecturer’s that responsible to teach electrical engineering. Circuit theory is among the subject that I am been taught in my university.

Circuit theory can be divided into two categories which is DC and AC. When I start to teach my student, I already study on how to make my student can easy to understand. I plan to write my note accordingly to my student feedback. Almost student wanted to know step by step and case by case each of the theorem in this subject. The entire example comes with complete solution. The example is choose to be easy for student to understand. The most important thing is to understand the concept of theorem, not to memorize the steps. If you know the concept, it will be easy for you to apply to others circuit.

Content of my note:


For DC circuit theory,


Chapter 1
  • Introduction to network analysis
  • Charge and current
  • Voltage
  • Power and energy
  • Circuit element
  • Basic law
  • Node, branches and loop
  • Kirchhoff’s laws
  • Resistive circuit
  • Voltage divider rule
  • Current divider rule
  • Wye-delta transformation
  • Source transformation
  • Nodal analysis
  • Mesh analysis
  • Superposition theorem
  • Thevenin’s theorem
  • Norton theorem
Chapter 2
  • Introduction to sinusoidal steady state analysis
  • Sinusoid
  • RMS value
  • Phasor concept
  • Sinusoid-phasor transformation
  • Phasor relationship for circuit element
  • Series-parallel element
  • Votage and current divider
  • Power and power factor correction
  • Complex power (power triangle)
Chapter 3
  • Magnetic circuit
  • Magnetic field
  • Introduction to magnetic circuit
  • Ampere’s circuital law
  • Series magnetic circuits
  • Air gaps
  • Series-parallel magnetic circuit
  • Determining φ
Chapter 4
  • Balanced 3-phase system
  • 3-pase voltage source and the relationship between line and phase voltage and current
  • Delta connected system
  • Star connected system
  • Source and load connection



For AC circuit theory
Chapter 1
  • Kirchhoff’s laws
  • Impedance combination
  • Star-delta transformation
  • Voltage divider rule
  • Current divider rule
  • Mesh analysis
  • Nodal analysis
Chapter 2
  • Superposition theorem
  • Source transformation
  • Thevenin’s theorem
  • Norton theorem
  • Maximum power transfer
Chapter 3
  • Magnetically coupled circuits
  • Mutual inductance
  • Coupling coefficient
  • Dot determination
Chapter 4
  • Two port network
  • Impedance (Z) parameter
  • Admittance (Y) parameter
  • T (ABCD) parameter
  • Terminated two port network
Chapter 5
  • DC transient analysis
  • Introduction
  • Natural response of RL circuit
  • Deriving an expression for the current
  • Switching time
  • Natural response for RC circuit
  • Deriving the expression of the voltage
  • Step response of RL circuit
  • Step response of RC circuit
Chapter 6
  • Resonant circuit
  • Introduction
  • Series resonant circuit
  • Parallel resonant circuit
  • Quality factor
  • Bandwidth
  • Selectivity



I give this note to all my students. I give to them just before I start to teach in the class. Easy for me and easy for my student.

Don’t worry for those who wanted to have my note. It not too expensive. I know how student’s life. I just want to share what I did in my class. The very cheap price is only to motivate and encourage myself to write much more a good note as a reference to students. The note is an original note with my handwriting.

You can choose which one do you want: DC Circuit Theory or AC Circuit Theory.
But I recommend to get both note/ebook.

It only cost you:
DC Circuit Theory = $0.50USD
Add to Cart

AC Circuit Theory = $0.50USD
Add to Cart