EC1010: Electrical and Magnetic Circuits(Jan.-May 2014)

• Nagendra Krishnapura

• CRC101

A slot(Mo 8am, Tu 1pm, Th 11am), F slot(Fr 8am)

Contact from your moodle page (Accessible only on IITM campus).

There will be four quizzes(Feb 3, Feb 24, Apr 7, Apr 25) and an end semester exam. The quizzes will count for 50-60% of the grade and the end semester exam for the remaining 40%. Tutorials held periodically will count for up to 10% of the grade.

The recorded lectures are available here. You can also find lectures from previous years at the same link. The introductory lecture has information on prerequisites and references.

Problem sets will be posted below. You are expected to solve them on your own. You can approach the teaching assistants for clarifications and help. You should work each one before the corresponding tutorial session dates given below. Solve the problems cleanly in a notebook showing the steps clearly and show it to the TAs during tutorial sessions.

1. Problem set 1(25th Jan. 2014): Basic elements; Power and energy
2. Problem set 2(31st Jan. 2014): Nodal analysis; Modified nodal analysis
3. Problem set 3(17th Feb. 2014): Mesh analysis; Circuit theorems
4. Problem set 4(21st Feb. 2014): Circuit theorems; Two port networks
5. Problem set 5(6th Mar. 2014): Small signal analysis of nonlinear circuits
6. Problem set 6(14th Mar. 2014): Opamp circuits
7. Problem set 7(21st Mar. 2014): RC, RL, RLC network response, differential equations
8. Problem set 8(28th Mar. 2014): Sinusoidal steady state response, Phasor diagrams, Bode plots
9. Problem set 9(11th Apr. 2014): Locus diagrams, Conjugate matching
10. Problem set 10(28th Apr. 2014): Three phase circuits
11. Problem set 11(28th Apr. 2014): Magnetic circuits

• Understand the behavior of basic circuit elements
• Understand basic laws applicable to all circuits
• Learn circuit analysis methods applicable to all linear circuits

After taking this course, one should be able to analyze any circuit(=write down the equations for the circuit and solve them) with linear elements with ideal voltage and current sources and opamps.

Current and voltage; Kirchhoff's current and voltage laws; Basic elements R, L, C, M; Power and energy; Nodal analysis; Mesh analysis; Circuit theorems; Incremental analysis of nonlinear circuits; Negative feedback and ideal opamp; First and second order circuits and corresponding differential equations; Forced and natural response; Step response; Sinusoidal steady state response; Phasor diagrams; Bode plots; 3 phase systems; Magnetic circuits-magnetic analogs of KVL and KCL; Hysteresis loops

• Hayt, Kemmerly, and Durbin, Engineering Circuit Analysis, 8th Edition, McGraw Hill 2012 (Indian Edition).

• DeCarlo and Lin, Linear Circuit Analysis, 2nd Edition, Oxford University Press 2001.
• SC Dutta Roy, Circuit Theory, NPTEL video lectures: http://nptel.iitm.ac.in/video.php?subjectId=108102042
• Modified Nodal Analysis: The following links describe nodal and modified nodal analysis. The first link also shows the MNA stamps for common elements.
  • Reference from Montagne Design & Consultancy
  • Reference from Swarthmore College
• Basic Electrical Circuits on NPTEL

• High school algebra and calculus; Basic electrostatics

Attendance will be strictly enforced and those falling short will not be permitted to write the end sem exam. TAs will go around the room taking attendance at the beginning of the class. If you are more than 5 min. late, please do not enter the classroom.