====== EC1010: Electrical and Magnetic Circuits(Jan.-May 2013) ====== These lectures are available on the web for the benefit of students at IIT Madras and elsewhere. Copyrights to these rest solely with the instructor and IIT Madras. Copying them, publishing them, rehosting them on other servers, or using them for any sort of commercial gain is prohibited. See [[:viewinglectures|this page]] for information on how to view these videos. ===== Instructor: Nagendra Krishnapura ===== This is a course on circuit analysis. Problem sets and other instructions can be found [[http://www.ee.iitm.ac.in/vlsi/courses/ec1010_2013/start|here]]. Familiarity with basic calculus is assumed. At IIT Madras, this is a prerequisite course for Networks and Systems and [[http://www.ee.iitm.ac.in/~nagendra/videolectures/doku.php?id=|Analog Circuits]]. The lectures are also available in iPod format(320x240 video, AAC audio). Click on the link marked iPod next to each lecture to download these. The pdf files contain the journal snapshots. ==== Lectures ==== - {{ec1010_2013nk:ec1010-intro.pdf|2013-01-17}}: Introduction to the course - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130118/20130118.html|2013-01-18]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130118/20130118.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130118/20130118.pdf|pdf]]): Current and Voltage; Kirchhoff's Current and Voltage laws; Electrical circuit elements: Resistance, voltage source, and current source - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130121/20130121.html|2013-01-21]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130121/20130121.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130121/20130121.pdf|pdf]]): Capacitor, Inductor, controlled sources, mutual inductor - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130122/20130122.html|2013-01-22]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130122/20130122.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130122/20130122.pdf|pdf]]): Mutual inductor; Power and energy; Energy in a mutual inductor; Capacitors and inductors in series and parallel - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130124/20130124.html|2013-01-24]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130124/20130124.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130124/20130124.pdf|pdf]]): Constraint on mutual inductance; Solving for circuits-nodes, branches, trees; Nodal analysis - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130128/20130128.html|2013-01-28]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130128/20130128.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130128/20130128.pdf|pdf]]): Nodal analysis - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130129/20130129.html|2013-01-29]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130129/20130129.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130129/20130129.pdf|pdf]]): Modified nodal analysis - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130131/20130131.html|2013-01-31]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130131/20130131.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130131/20130131.pdf|pdf]]): Modified nodal analysis; Loop analysis with link currents; Mesh analysis of planar circuits with mesh currents - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130204/20130204.html|2013-02-04]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130204/20130204.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130204/20130204.pdf|pdf]]): Mesh analysis; Circuit theorems-substitution theorem - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130205/20130205.html|2013-02-05]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130205/20130205.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130205/20130205.pdf|pdf]]): Thevenin and Norton equivalent of circuits - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130207/20130207.html|2013-02-07]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130207/20130207.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130207/20130207.pdf|pdf]]): Maximum power transfer theorem; Tellegen's theorem; Reciprocity of resistive networks - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130212/20130212.html|2013-02-12]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130212/20130212.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130212/20130212.pdf|pdf]]): Reciprocity theorem; Pushing a voltage source through a node; Splitting a current source - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130214/20130214.html|2013-02-14]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130214/20130214.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130214/20130214.pdf|pdf]]): Exploiting symmetry in circuit analysis; Power transfer as available minus reflected power; Compensation theorem - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130215/20130215.html|2013-02-15]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130215/20130215.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130215/20130215.pdf|pdf]]): Two port parameters - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130218/20130218.html|2013-02-18]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130218/20130218.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130218/20130218.pdf|pdf]]): Two port parameters-reciprocal two ports, unilateral two ports, graphical representation - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130219/20130219.html|2013-02-19]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130219/20130219.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130219/20130219.pdf|pdf]]): Analysis of nonlinear circuits; Small signal approximation - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130221/20130221.html|2013-02-21]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130221/20130221.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130221/20130221.pdf|pdf]]): Analysis of nonlinear circuits; Small signal approximation - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130226/20130226.html|2013-02-26]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130226/20130226.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130226/20130226.pdf|pdf]]): Opamp and negative feedback - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130228/20130228.html|2013-02-28]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130228/20130228.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130228/20130228.pdf|pdf]]): Negative and positive feedback; Determining opamp signs for negative feedback - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130305/20130305.html|2013-03-05]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130305/20130305.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130305/20130305.pdf|pdf]]): Determining opamp signs for negative feedback; CCVS using an opamp; Input and output resistances of controlled sources - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130307/20130307.html|2013-03-07]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130307/20130307.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130307/20130307.pdf|pdf]]): CCVS using an opamp; Circuits with capacitors - 2013-03-08: Step response of RC circuits; Response of a first order circuit to a constant and exp(st) (No recording: refer to last year's lectures) * [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201201/lectures/20120207/20120207.html|18. Opamp amplifiers; Two port representations(cont'd); RC circuit natural response; First order differential equation]] * [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201201/lectures/20120209/20120209.html|19.Step response of RC circuits; Response of a first order circuit to exp(st)]] - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130311/20130311.html|2013-03-11]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130311/20130311.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130311/20130311.pdf|pdf]]): Response of first order circuit to exp(st), cos(wt); Response to sinusoids in terms of response of exp(jwt) - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130312/20130312.html|2013-03-12]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130312/20130312.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130312/20130312.pdf|pdf]]): Step response of first order RC/RL circuits - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130314/20130314.html|2013-03-14]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130314/20130314.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130314/20130314.pdf|pdf]]): Sinusoidal steady state response - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130315/20130315.html|2013-03-15]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130315/20130315.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130315/20130315.pdf|pdf]]): Second order differential equation; RLC circuit natural response - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130318/20130318.html|2013-03-18]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130318/20130318.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130318/20130318.pdf|pdf]]): RLC circuit natural response; Sinusoidal steady state response - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130319/20130319.html|2013-03-19]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130319/20130319.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130319/20130319.pdf|pdf]]): Sinusoidal steady state response; Phasor diagrams; Magnitude and phase versus frequency - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130321/20130321.html|2013-03-21]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130321/20130321.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130321/20130321.pdf|pdf]]): Magnitude and phase versus frequency; Bode plots; Sinusoidal steady state response of a series RLC circuit - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130322/20130322.html|2013-03-22]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130322/20130322.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130322/20130322.pdf|pdf]]): Sinusoidal steady state response of a series RLC circuit; Circuit analysis and circuit theorems with phasors and complex impedances; rms value of an ac signal; Determining opamp signs for negative feedback-revisited - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130325/20130325.html|2013-03-25]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130325/20130325.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130325/20130325.pdf|pdf]]): Complex power, real(average) power, apparent power, power factor, power factor correction; Conjugate matching for maximum power transfer - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130326/20130326.html|2013-03-26]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130326/20130326.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130326/20130326.pdf|pdf]]): Quality factor in terms of energy; Locus diagrams - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130328/20130328.html|2013-03-28]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130328/20130328.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130328/20130328.pdf|pdf]]): Locus diagrams; Phasor representation of a mutual inductor - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130402/20130402.html|2013-04-02]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130402/20130402.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130402/20130402.pdf|pdf]]): Ideal transformer; Impedance matching using a transformer and other networks - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130404/20130404.html|2013-04-04]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130404/20130404.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130404/20130404.pdf|pdf]]): Three phase power transmission; Real and reactive power - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130405/20130405.html|2013-04-05]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130405/20130405.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130405/20130405.pdf|pdf]]): Balanced and unbalanced loads; Power factor in a 3 phase balanced system; 3 phase power measurement - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130408/20130408.html|2013-04-08]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130408/20130408.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130408/20130408.pdf|pdf]]): Symmetrical component representation of unbalanced three phase quantities - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130412/20130412.html|2013-04-12]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130412/20130412.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130412/20130412.pdf|pdf]]): Practical resistors and capacitors; Introduction to magnetic circuits - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130416/20130416.html|2013-04-16]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130416/20130416.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130416/20130416.pdf|pdf]]): Flux density in a single loop; Solenoid; Solenoid with a ferromagnetic core; Flux density in a single loop; Solenoid with air/ferromagnetic core; Reluctance of a magnetic circuit - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130418/20130418.html|2013-04-18]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130418/20130418.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130418/20130418.pdf|pdf]]): Magnetic circuits; Inductance and mutual inductance of a coil with a ferromagnetic core; B-H nonlinearity - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130419/20130419.html|2013-04-19]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130419/20130419.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130419/20130419.pdf|pdf]]): Hysteresis loss; Eddy current loss - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130423/20130423.html|2013-04-23]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130423/20130423.m4v|iPod]], [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201301/lectures/20130423/20130423.pdf|pdf]]): Transformer miscellanea; Complex power and its relationship to time domain components of power ==== Problem sets ==== - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2013/201301ec1010prob1.pdf?id=courses%3Aec1010_2013%3Astart&cache=cache|Problem set 1]](1st Feb. 2013): Basic elements; Nodal analysis; Modified nodal analysis - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2013/201301ec1010prob2.pdf?id=courses%3Aec1010_2013%3Astart&cache=cache|Problem set 2]](11th Feb. 2013): Circuit theorems - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2013/201301ec1010prob3.pdf?id=courses%3Aec1010_2013%3Astart&cache=cache|Problem set 3]](25th Feb. 2013): Circuit theorems - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2013/201301ec1010prob4.pdf?id=courses%3Aec1010_2013%3Astart&cache=cache|Problem set 4]](23rd Mar. 2013): Opamp circuits - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2013/201301ec1010prob5.pdf?id=courses%3Aec1010_2013%3Astart&cache=cache|Problem set 5]](23rd Mar. 2013): RC, RLC network response, differential equations - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2013/201301ec1010prob6.pdf?id=courses%3Aec1010_2013%3Astart&cache=cache|Problem set 6]](8th Apr. 2013): Sinusoidal steady state analysis, phasor diagrams, Bode plots - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2013/201301ec1010prob7.pdf?id=courses%3Aec1010_2013%3Astart&cache=cache|Problem set 7]](15th Apr. 2013): Locus diagrams, Three phase circuits - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2013/201301ec1010prob8.pdf?id=courses%3Aec1010_2013%3Astart&cache=cache|Problem set 8]](26th Apr. 2013): Magnetic circuits, transformers ==== Quizzes ==== - 2013-02-08: Quiz I - 2013-03-04: Quiz II - 2013-04-01: Quiz III - 2013-04-22: Quiz IV