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

BLOSSOMS video producer, Jerold Gelfand, provides guidelines and suggestions for anyone who will be videotaping a BLOSSOMS lesson.

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