The MIT Video website will be discontinued as of Feb. 28, 2017, and we are no longer accepting new content for posting on this site. Since all videos on this site are hosted elsewhere – generally on YouTube – we encourage regular users of this site to bookmark those external pages hosting videos that are important to them. Questions may be directed to newsoffice@mit.edu.

Description: This lecture covers compensating a gain-often amplifier, demonstration of performance that results with various types of compensation, and a summary of the advantages and disadvantages of four compensating techniques. Instructor: James K. Roberge

Description: This lecture covers the topology and exact loop transmission of feedback compensation, simplification for the case of large minor-loop transmission magnitude, and a popular operational amplifier configuration that uses feedback compensation. Instructor: James K. Roberge

Description: This lecture covers practical considerations, single-pole compensation including demonstrations, two-pole compensation, and a demonstration of improved desensitivity compared with one-pole compensation. Instructor: James K. Roberge

Description: This lecture covers the use of a dominant pole and the advantage for regulators, and lead and lag compensation. Instructor: James K. Roberge

Description: This lecture covers applications and modeling of phase-locked loops, types of phase detectors, and demonstrations. Instructor: James K. Roberge

Description: This lecture covers designs for a favorite toy, numerous deminstractions that illustrate basic problems, and practical (or impractical) considerations. Instructor: James K. Roberge

Description: This lecture covers additional examples, root locus contours, the location of closed-loop zones, and a demonstration of a band-pass and a rejection amplifier. Instructor: James K. Roberge

Description: This lecture covers Nyquist Criterion, development by mapping from s-place to the gain-phase plane, relative stability, closed-loop frequency response, and the Nichols Chart, including illustration with a 3-dimensional chart. Instructor: James K. Roberge

Description: This lecture covers examples of peaking determination, phase margin, gain margin, crossover frequency, the relationship between phase margin and peaking, indicators of relative stability, and compensation by changing the loop-transmission magnitude. Instructor: James K. Roberge

Description: This lecture covers attenuation of noise applied following amplification, moderation of nonlinearities located in the forward path, intentional inclusion of a nonlinearity in the feedback path, and demonstation of a nonlinear audio amplifier with added ...

Description: This lecture covers first and second order systems, transient response, a demonstration illustrating approximating a higher-order system as a first or second order one, realtionships between step response and frequency response, and Bode plots. Instructor: ...

Description: This lecture covers stability, special case of linear systems, behavior of first, second, and third-order systems as a function of loop-transmission magnitude, Routh Criterion, root-locus analysis, and sample construction for a second-order system. Instructor: James K. Roberge

Description: This lecture covers the location of closed-loop poles, rules that speed construction of the root-locus diagram, and examples of these things. Instructor: James K. Roberge

Description: This lecture covers the derivation of the describing function, the approximation used, analysis of an oscillator, and the conditions for stable amplitude. Instructor: James K. Roberge

Description: This lecture covers analysis and a demonstration of a function generator, introduction to conditional stability, and a demonstration using amplifiers with two-pole compensation. Instructor: James K. Roberge

Description: This lecture covers the Wienbridge topology and control of its amplitude by limiting, the quadrature oscillator, the use of a slow loop for amplitude stabilization in order to maintain spectral purity, and demonstrations. Instructor: James K. Roberge

Description: This lecture covers the definition of a feedback system, the closed loop gain, block diagrams, loop transmission, desensitivity, and impedance modification via feedback. Instructor: James K. Roberge

Description: This lecture covers the operating-point expansion, designing an example magnetic levitator, modeling compensation, and a practical way of determining system parameters. Instructor: James K. Roberge

Speakers: Cody Coleman, Electrical Engineering and Computer Science, '13 Sam Shames, Materials Science and Engineering, '14 Ethan Solomon, McGovern Institute for Brain Research, '12 Recorded on June 19, 2013