The document discusses current divider rule and Kirchhoff's laws. It provides an overview of the syllabus which includes topics like resistors, capacitors, inductors, semiconductor devices, transformers, motors and more. Kirchhoff's current law states that the algebraic sum of currents at any junction in an electrical network equals zero. The total resistance in a series circuit is greater than its largest resistance, while the total resistance in a parallel circuit is less than its smallest resistance.
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Current Divider Rule and KCL Lecture
1. Current Divider Rule and KCL
Lecture 6
A.V.Ramachandran
31-Oct-2022
(ECE and CCE)
2. Syllabus
• Unit 1 Introduction to Electrical Engineering, Current and Voltage sources, Resistance, Inductance
and Capacitance; Ohm’s law, Kirchhoff’s law, Energy and Power – Series parallel combination of R,
L, C components, Voltage Divider and Current Divider Rules – Super position Theorem, Network
Analysis – Mesh and Node methods-
• Unit 3 PN Junction diodes, VI Characteristics, Rectifiers: Half wave, Full wave, Bridge. Zener
Diode- characteristics – regulator design, Optoelectronic devices. BJT – characteristics and
configurations (CE) , Transistor as a Switch. Junction Field Effect Transistors - operation and
characteristics, Thyristor (SCR)– Operation and characteristics. Fundamentals of DIAC and TRIAC.
555 Timer, Integrated circuits. Operational Amplifiers – Inverting and Non-inverting amplifier –
Instrumentation amplifiers.
• Rest of Unit-1: Faraday’s Laws of Electro-magnetic Induction, Magnetic Circuits, Self and Mutual
Inductance, Generation of sinusoidal voltage, Instantaneous, Average and effective values of
periodic functions, Phasor representation. Introduction to 3-phasesystems, Introduction to
electric grids.
• Unit 2 Electrical Machines: DC Motor: Construction, principle of operation, Different types of DC
motors, Voltage equation of a motor, significance of back EMF, Speed, Torque, Torque-Speed
characteristics, Output Power, Efficiency and applications. Single Phase Transformer:
Construction, principle of operation, EMF Equation. Regulation and Efficiency of a Transformer.
Induction Machine: Three Phase Induction Motor: Construction and Principle of Operation, Slip
and Torque, Speed Characteristics. Stepper motor: Construction, principle and mode of operation.
3. Text Books and References
• Textbook(s)
• Edward Hughes. “Electrical and Electronic Technology”, 10th Edition, Pearson Education Asia,
2019.
• D. P. Kothari, I J Nagrath, “Electric Machines”, 5th Edition, Tata McGraw Hill, 2017.
• A. P. Malvino, “Electronic Principles”, 7th Edition, Tata McGraw Hill, 2007.
• References
• S. K. Bhattcharya, “Basic Electrical and Electronics Engineering”, Pearson, 2012.
• Vincent Del Toro, “Electrical Engineering Fundamentals”, Prentice Hall of India Private Limited,
2nd Edition, 2003.
• David A. Bell, “Electronic Devices and Circuits”, 5th Edition, Oxford University Press, 2008.
• (Michael Tooley B. A., “Electronic circuits: Fundamentals and Applications”, 3rd Edition,
Elsevier Limited, 2006.
• K. S Suresh Kumar, “Electric Circuits and Networks”
• W.H. Hayt, “Engineering Circuit Analysis” Mcgraw Hill, 2012
4. Electrical and Electronics Engineering
Faraday’s Law and Magnetic
Circuits
AC Generation
and Distribution
Transformer
DC Motor
Induction
Motor
Stepper
Motor
Components
R,L and C Semiconductor Devices
Low Power Devices
PN Junction
Rectifiers
BJT
Switch
JFET IC
555
Timer
OPAMP
Amplifiers
High Power Devices
Thyristor, Diac and
Triac
Laws/Theorems/Analysis/
Techniques
Applications
Applications
Working Mechanism
(CO-3)
(CO-4)
(CO-1 & CO-2)
(CO-1)
(CO-4)
(CO-1)
(CO-2 & CO-4)
(CO-2 & CO-4)
Concept Map
Used to
analyse
and
design
15. Rule of Thumb
• In a series circuit, the total resistance is always greater than the
greatest resistance in the circuit.
• In a parallel network, the total resistance is always less than the
smallest resistance in the network
16. Kirchhoff’s law
• First (current) law. At any instant the algebraic sum of
the currents at a junction in a network is zero.
Gustav Kirchhoff
[Source: Wikipedia]
Electric circuits,
Optics,
Spectroscopy,
Thermochemistry
etc..
17.
18. Law need not only apply to a junction but may also apply to a section of a network
19. If only input and output are investigated, no need to know about the middle one
(can treat as black box)