====== EC1010: Electrical and Magnetic Circuits(Jan.-May 2014) ====== 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_2014/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]]. If you click on the link, the lecture plays in the browser. To download the video, click on the link, replace ".html" at the end by ".mp4". You may have to disable player plugins to save the file instead of playing it. You can also do ''wget '' from command line to get the link. ==== Lectures ==== - {{ec1010_2014nk:ec1010-intro.pdf|2014-01-16}}: Introduction to the course - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140117/20140117.html|2014-01-17]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140117/20140117.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/EC1010/201401/lectures/20140121/20140121.html|2014-01-21]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140121/20140121.pdf|pdf]]): Capacitor, Inductor, controlled sources, mutual inductor; Elements in series and parallel - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140123/20140123.html|2014-01-23]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140123/20140123.pdf|pdf]]): Power and energy; Constraint on mutual inductance - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140124/20140124.html|2014-01-24]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140124/20140124.pdf|pdf]]): Open and short circuits; Loops and nodes in a circuit; Nodal analysis - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140127/20140127.html|2014-01-27]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140127/20140127.pdf|pdf]]): Nodal analysis of circuits with resistors and independent current sources; Voltage sources and supernodes; Controlled sources - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140128/20140128.html|2014-01-28]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140128/20140128.pdf|pdf]]): Nodal analysis of circuits with controlled sources; Modified nodal analysis(MNA) - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140130/20140130.html|2014-01-30]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140130/20140130.pdf|pdf]]): (no recording) Modified nodal analysis(MNA) - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140204/20140204.html|2014-02-04]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140204/20140204.pdf|pdf]]): Loop analysis with link currents - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140206/20140206.html|2014-02-06]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140206/20140206.pdf|pdf]]): Mesh analysis; Superposition theorem; Pushing a voltage source through a node - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140207/20140207.html|2014-02-07]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140207/20140207.pdf|pdf]]): Splitting a current source; Substitution theorem - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140210/20140210.html|2014-02-10]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140210/20140210.pdf|pdf]]): Thevenin's theorem; Maximum power transfer theorem; Tellegen's theorem - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140211/20140211.html|2014-02-11]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140211/20140211.pdf|pdf]]): Norton's theorem; Tellegen's theorem; Reciprocity in resistive networks - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140213/20140213.html|2014-02-13]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140213/20140213.pdf|pdf]]): Reciprocity in resistive networks; Introduction to two port networks - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140214/20140214.html|2014-02-14]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140214/20140214.pdf|pdf]]): Two port parameters - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140218/20140218.html|2014-02-18]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140218/20140218.pdf|pdf]]): Reciprocal two ports; Compensation theorem - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140219/20140219.html|2014-02-19]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140219/20140219.pdf|pdf]]): Review of reciprocity and two ports - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140225/20140225.html|2014-02-25]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140225/20140225.pdf|pdf]]): Incremental analysis of nonlinear circuits; Diode model - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140227/20140227.html|2014-02-27]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140227/20140227.pdf|pdf]]): Incremental analysis of nonlinear circuits; Diode model - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140228/20140228.html|2014-02-28]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140228/20140228.pdf|pdf]]): Incremental y parameters of nonlinear two ports; Negative feedback and ideal opamp - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140303/20140303.html|2014-03-03]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140303/20140303.pdf|pdf]]): Negative feedback and opamp; Assigning opamp signs for negative feedback - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140304/20140304.html|2014-03-04]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140304/20140304.pdf|pdf]]): Negative feedback and opamp; Assigning opamp signs for negative feedback - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140307/20140307.html|2014-03-07]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140307/20140307.pdf|pdf]]): Circuits with capacitors and inductors; First order differential equation and its solutions - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140310/20140310.html|2014-03-10]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140310/20140310.pdf|pdf]]): Step response of a first order circuit - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140311/20140311.html|2014-03-11]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140311/20140311.pdf|pdf]]): Step response of a first order circuit - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140313/20140313.html|2014-03-13]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140313/20140313.pdf|pdf]]): Steady state response of a first order circuit to exponential and sinusoidal inputs - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140318/20140318.html|2014-03-18]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140318/20140318.pdf|pdf]]): Sinusoidal steady state response; Natural response of a second order circuit - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140320/20140320.html|2014-03-20]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140320/20140320.pdf|pdf]]): Natural response of a second order circuit - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140324/20140324.html|2014-03-24]]: Natural response of a second order circuit; Sinusoidal steady state response - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140325/20140325.html|2014-03-25]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140325/20140325.pdf|pdf]]): Sinusoidal steady state response; Phasors and their use in circuit analysis - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140327/20140327.html|2014-03-27]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140327/20140327.pdf|pdf]]): Phasor diagrams; Magnitude and phase plots - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140401/20140401.html|2014-04-01]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140401/20140401.pdf|pdf]]): Magnitude and phase plots; Bode plots; Magnitude and phase response of a second order RLC circuit - 2014-04-03: Complex power; Conjugate matching for maximum power transfer (no recording; refer to last year's lecture below) * [[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/EC1010/201401/lectures/20140404/20140404.html|2014-04-04]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140404/20140404.pdf|pdf]]): Power factor correction; Locus diagrams - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140408/20140408.html|2014-04-08]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140408/20140408.pdf|pdf]]): Locus diagrams; Conjugate matching networks; Phasor representation of a mutual inductor - 2014-04-10: Quiz III review - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140411/20140411.html|2014-04-11]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140411/20140411.pdf|pdf]]): Ideal transformer; Impedance matching with a transformer; Three phase power transmission - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140416/20140416.html|2014-04-16]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140416/20140416.pdf|pdf]]): Three phase systems; 3 and 4 wire connection; Delta and star connected loads; Star-Delta transformation; Balanced and unbalanced loads - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140417/20140417.html|2014-04-17]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140417/20140417.pdf|pdf]]): Star point voltage in an unbalanced load; Symmetrical component representation of unbalanced quantities - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140421/20140421.html|2014-04-21]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140421/20140421.pdf|pdf]]): Symmetrical components; Wattmeter and power measurement in single and 3 phase systems - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140422/20140422.html|2014-04-22]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140422/20140422.pdf|pdf]]): Magnetic circuits-analogs of KVL, KCL, and ohms law - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140425/20140425.html|2014-04-25]]([[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/20140425/20140425.pdf|pdf]]): Magnetic components using loops of magnetic material; Nonlinearity, hysteresis, and eddy current losses ==== Additional material ==== - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/opampsigns/opampsigns.html|Determining opamp signs for negative feedback]] - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/reciprocityaltproof/reciprocityaltproof.html|Another proof of reciprocity in resistive two-ports]] - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/stepresponse2ndorder/stepresponse2ndorder.html|Step response of a second order system]] - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/freqresponse2ndorder/freqresponse2ndorder.html|Magnitude and Phase response of a second order system]] - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/singlephasepower/singlephasepower.html|Power and power factor in a single phase circuit]] - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/threephasepower/threephasepower.html|Power and power factor in a three phase circuit]] - [[http://www.ee.iitm.ac.in/~nagendra/EC1010/201401/lectures/idealtransformer/idealtransformer.html|Basic properties of an ideal transformer]] ==== Problem sets ==== - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2014/201401ec1010probset01.pdf?id=courses%3Aec1010_2014%3Astart&cache=cache|Problem set 1]](25th Jan. 2014): Basic elements; Power and energy - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2014/201401ec1010probset02.pdf?id=courses%3Aec1010_2014%3Astart&cache=cache|Problem set 2]](31st Jan. 2014): Nodal analysis; Modified nodal analysis - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2014/201401ec1010probset03.pdf?id=courses%3Aec1010_2014%3Astart&cache=cache|Problem set 3]](17th Feb. 2014): Mesh analysis; Circuit theorems - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2014/201401ec1010probset04.pdf?id=courses%3Aec1010_2014%3Astart&cache=cache|Problem set 4]](21st Feb. 2014): Circuit theorems; Two port networks - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2014/201401ec1010probset05.pdf?id=courses%3Aec1010_2014%3Astart&cache=cache|Problem set 5]](6th Mar. 2014): Small signal analysis - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2014/201401ec1010probset06.pdf?id=courses%3Aec1010_2014%3Astart&cache=cache|Problem set 6]](14th Mar. 2014): Opamp circuits - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2014/201401ec1010probset07.pdf?id=courses%3Aec1010_2014%3Astart&cache=cache|Problem set 7]](21st Mar. 2014): RC, RL, RLC network response, differential equations - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2014/201401ec1010probset08.pdf?id=courses%3Aec1010_2014%3Astart&cache=cache|Problem set 8]](28th Mar. 2014): Sinusoidal steady state response, Phasor diagrams, Bode plots - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2014/201401ec1010probset09.pdf?id=courses%3Aec1010_2014%3Astart&cache=cache|Problem set 9]](15th Apr. 2014): Locus diagrams, Conjugate matching - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2014/201401ec1010probset10.pdf?id=courses%3Aec1010_2014%3Astart&cache=cache|Problem set 10]](28th Apr. 2014): Three phase circuits - [[http://www.ee.iitm.ac.in/vlsi/_media/courses/ec1010_2014/201401ec1010probset11.pdf?id=courses%3Aec1010_2014%3Astart&cache=cache|Problem set 11]](28th Apr. 2014): Magnetic circuits ==== Quizzes ==== - 2014-02-03: Quiz I - 2014-02-24: Quiz II - 2014-04-07: Quiz III - 2014-04-29: Quiz IV