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 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 here. Familiarity with basic calculus is assumed. At IIT Madras, this is a prerequisite course for Networks and Systems and Analog Circuits.
The lectures are also available in iPod format(320×240 video, AAC audio). Click on the link marked iPod next to each lecture to download these. The pdf files contain the journal snapshots.
Lectures
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2013-01-18(
iPod,
pdf): Current and Voltage; Kirchhoff's Current and Voltage laws; Electrical circuit elements: Resistance, voltage source, and current source
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2013-01-22(
iPod,
pdf): Mutual inductor; Power and energy; Energy in a mutual inductor; Capacitors and inductors in series and parallel
2013-01-24(
iPod,
pdf): Constraint on mutual inductance; Solving for circuits-nodes, branches, trees; Nodal analysis
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2013-01-31(
iPod,
pdf): Modified nodal analysis; Loop analysis with link currents; Mesh analysis of planar circuits with mesh currents
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2013-02-07(
iPod,
pdf): Maximum power transfer theorem; Tellegen's theorem; Reciprocity of resistive networks
2013-02-12(
iPod,
pdf): Reciprocity theorem; Pushing a voltage source through a node; Splitting a current source
2013-02-14(
iPod,
pdf): Exploiting symmetry in circuit analysis; Power transfer as available minus reflected power; Compensation theorem
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2013-02-18(
iPod,
pdf): Two port parameters-reciprocal two ports, unilateral two ports, graphical representation
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2013-02-28(
iPod,
pdf): Negative and positive feedback; Determining opamp signs for negative feedback
2013-03-05(
iPod,
pdf): Determining opamp signs for negative feedback; CCVS using an opamp; Input and output resistances of controlled sources
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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)
2013-03-11(
iPod,
pdf): Response of first order circuit to exp(st), cos(wt); Response to sinusoids in terms of response of exp(jwt)
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2013-03-15(
iPod,
pdf): Second order differential equation; RLC circuit natural response
2013-03-18(
iPod,
pdf): RLC circuit natural response; Sinusoidal steady state response
2013-03-19(
iPod,
pdf): Sinusoidal steady state response; Phasor diagrams; Magnitude and phase versus frequency
2013-03-21(
iPod,
pdf): Magnitude and phase versus frequency; Bode plots; Sinusoidal steady state response of a series RLC circuit
2013-03-22(
iPod,
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
2013-03-25(
iPod,
pdf): Complex power, real(average) power, apparent power, power factor, power factor correction; Conjugate matching for maximum power transfer
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2013-04-02(
iPod,
pdf): Ideal transformer; Impedance matching using a transformer and other networks
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2013-04-05(
iPod,
pdf): Balanced and unbalanced loads; Power factor in a 3 phase balanced system; 3 phase power measurement
2013-04-08(
iPod,
pdf): Symmetrical component representation of unbalanced three phase quantities
2013-04-12(
iPod,
pdf): Practical resistors and capacitors; Introduction to magnetic circuits
2013-04-16(
iPod,
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
2013-04-18(
iPod,
pdf): Magnetic circuits; Inductance and mutual inductance of a coil with a ferromagnetic core; B-H nonlinearity
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2013-04-23(
iPod,
pdf): Transformer miscellanea; Complex power and its relationship to time domain components of power
Problem sets
Problem set 1(1st Feb. 2013): Basic elements; Nodal analysis; Modified nodal analysis
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Problem set 5(23rd Mar. 2013): RC, RLC network response, differential equations
Problem set 6(8th Apr. 2013): Sinusoidal steady state analysis, phasor diagrams, Bode plots
Problem set 7(15th Apr. 2013): Locus diagrams, Three phase circuits
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Quizzes
2013-02-08: Quiz I
2013-03-04: Quiz II
2013-04-01: Quiz III
2013-04-22: Quiz IV