Bode Henrik W.ABAA
Relations Between Attenuation and Phase in Feedback Amplifier Design
194027511New York: American Telephone and Telegraph Company 1940. Later printing. Wraps. Near Fine. Later printing. 34 pages. Plain white printed wraps with three holes punched near the spine as issued. 8vo. Previous owner's name C. P. Troemel on front wrapper. A later printing with white wrappers rather than the light blue wrappers. Wraps. Previous owner C. P. Troemel was a writer for Popular Electronics in the 1960s.<br/><br/>The first separate appearance here in a later printing of this seminal paper in Monograph B-1239 of the Bell Telephone System Technical Publication series. First published in the Bell System Technical Journal July 1940 based on a presentation given at an IEEE Symposium on Network Theory in January 1940. This paper Bode's "best known and most succinct contribution to feedback theory" pre-dates Bode's better known work "Network Analysis and Feedback Amplifier Design" by 5 years and is the first publication on Bode plots. It is a seminal work in the field of control theory.<br/><br/>"Henry Wade Bode was widely known as one of the most articulate thoughtful exponents of the philosophy and practice of systems engineering - the science and art of integrating technical components into a coherent system that is optimally adapted to its social function.Bode in 1929 transferred to Bell Labs' mathematical research group.and specialized in network theory and its application to long-distance communications. His extensive research in this field led eventually to the publication in 1945 of his classic book 'Network Analysis and Feedback Amplifier Design'.During his carrer at Bell he was granted 25 patents for innovations in the areas of transmission networks transformer systems electrical wave amplification broadband amplifiers and artillery computing.Bode received many honors during his career. In 1969 he was awarded the prestigious Edison Medal of the Institute of Electrical and Electronic Engineers IEEE 'for fundamental contributions to the arts of communication computation and control and for guidance and creative counsel in systems engineering.With the death of Hendrik Bode the country and university community lost of of the great engineering philosophers of his time." Memorial Tributes National Academy of Engineernig Vol. 3<br/><br/>While not known to the average citizen Bode is well known to engineering students for the Bode plot which allows engineers to characterize a feedback amplifier and it's useful range of operation. Practically speaking it helps engineers keep systems from operating at the extremes like the shrill noise we've all heard when someone using a microphone gets too close the speaker broadcasting their words. Like many things it was born from his need to solve a specific problem and finding that after a search of the literature nothing practical existed. "As a consequence of developing mathematical methods for designing feedback amplifiers to specified tolerances it became possible to design reliable vacuum-tube circuitry suitable for precision applications in early computers ." Engineering and Science in the Bell System p 353<br/><br/>Tamer Basar's Control Theory: Twenty-Five Seminal Papers 1932-1981 Mindell's Between Human and Machine: Feedback Control and Computing Before Cybernetics. American Telephone and Telegraph Company unknown books
Kuenzig Books, ABAA · États-Unis83,00 $US≈ 70,23 €
