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	Black Harold Stephen - Search Results - MSN Encarta
		Sir Stephen Harold Spender was born in London and educated at...
		Harold Stephen Black: American electrical engineer who discovered and developed the negative-feedback principle, in which amplification output is fed back into the input, thus...
		Harold Stephen Black (1898-1983) was an electrical engineer who revolutionized the field of applied electronics by inventing the negative feedback amplifier in 1927.
	encarta.msn.com /Black_Harold_Stephen.html (204 words)

	Black, Harold Stephen - MSN Encarta
		When Black joined Western Electric, the telephone industry was seeking a way to increase the strength and clarity of electrical signals used in long-distance telephone systems.
		Black’s theory led to the design of a negative feedback amplifier.
		Black also researched and developed a way to allow a single pair of wires to carry several conversations.
	encarta.msn.com /encyclopedia_761589187/Black_Harold_Stephen.html (295 words)

	Invent Now \| Hall of Fame \| Search \| Inventor Profile
		After six years of persistence, Black conceived the principles and equations for his negative feedback amplifier in a flash commuting to work aboard the ferry.
		Born in Leominster, Massachusetts, Black graduated from Worcester Polytechnic Institute in 1921; years later he received an honorary doctorate in engineering from Worcester Tech.
		Black worked on a negative feedback system to aid the blind and deaf from 1966 until his death.
	www.invent.org /hall_of_fame/16.html (167 words)

	Stephen Crane:Bibliography 1980-1995
		Stephen Crane: An Exhibition on the Centennial of the Red Badge of Courage at the Grolier Club November 29, 1995 to January 12, 1996 from the Collection of Stanley Wertheim.
		"Stephen Crane's Manuscript of 'This Majestic Lie'." Studies in Bibliography: Papers of the Bibliographical Society of the University of Virginia 36 (1983): 221-29.
		"Yone Noguchi to Stephen Crane." Eigo Seinen 130 (1985): 530-32.
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	Harold Stephen Black Summary
		Harold Stephen Black was born in Leominster, Massachusetts.
		To some, his invention is considered the most important breakthrough of the century in the field of electronics, since it has a wide area of application.
		Black's 1953 book Modulation Theory was the source of the terms Nyquist rate and Nyquist interval, but he did not apply Nyquist's or Shannon's name to the sampling theorem as was done later by others, possibly over-interpreting Black's description of "the sampling principle".
	www.bookrags.com /Harold_Stephen_Black (248 words)

	Harold Stephen Black — Infoplease.com
		Black's negative feedback concept involved feeding systems output back to the input as a method of system control thus helping to eliminate distortion in telecommunications and to extend the frequency range of the amplifier.
		Harold Prince, the legendary director of Fiddler on the Roof, West Side Story, Company, Sweeney Todd and Phantom of the Opera, talked......
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	Feedback amplifier - Wikipedia, the free encyclopedia
		Feedback can be negative or positive, but must be negative for overall stability of the system.
		Negative feedback (NFB) in an electronic amplifier was invented by Harold Stephen Black (US patent 2,102,671 (issued in 1937)
		The idea of this invention is simple: If the loop gain is large, overall response of the whole system can be very close to inverted feedback network response.
	en.wikipedia.org /wiki/Feedback_amplifier (166 words)

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	Feedback
		If the signal is inverted on its way round the control loop, the system is said to have negative feedback; otherwise, the feedback is said to be positive.
		Negative feedback is often deliberately introduced to increase the stability and accuracy of a system, as in the feedback amplifier invented by Harold Stephen Black.
		This scheme can fail if the input changes faster than the system can respond to it.
	www.ebroadcast.com.au /lookup/encyclopedia/fe/Feedback.html (800 words)

	December 11 - Today in Science History (Site not responding. Last check: 2007-10-26)
		American electrical engineer who discovered and developed the negative-feedback principle, in which amplification output is fed back into the input, thus producing nearly distortionless and steady amplification.
		After six years of persistence, Black conceived his negative feedback amplifier in a flash commuting to work aboard the ferry.
		This second prize was for her individual achievements in Chemistry, whereas her first prize (1903) was a collaborative effort with her husband, Pierre, and Henri Becquerel in Physics for her contributions in the discovery of radium and polonium.
	www.todayinsci.com /12/12_11.htm (3679 words)

	Patents & The Process of Invention
		The device is ingenious yet simple: a float operates a valve letting in the water–very much as in a toilet tank–but it also operates and regulates the water pump.
		As the Watt governor on the steam engine before it, this system incorporates the principle of the feedback control system, which would take nearly another century to be clarified and patented by Harold Stephen Black in 1938 (No. 2,102,671 for the Negative Feedback Amplifier).
		Since then, of course "feedback" has become a household word and found its way into telecommunications, computers, weapons, biomedical devices, not to mention as a concept in science and philosophy.
	doc1.cooper.edu:8080 /gateway/patents/site/exhibition_12.html (598 words)

	[No title] (Site not responding. Last check: 2007-10-26)
		Harold Stephen Black was an electrical engineer who revolutionized the field of applied electronics by inventing the negative feedback amplifier in.
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		Harold, for instance, can't stand Adam because Harold's father thinks Adam is the archetypical "perfect" son.
		Harold, who must win no matter what the cost if he is to retain even a shred of his father's affections, cheats from the get go with a fancy computer that instantly decodes Leon's clues.
	www.amazon.com /Midnight-Madness-David-Naughton/dp/B0000DZ3GQ (2472 words)

	info: Harold_Stephen_Black (Site not responding. Last check: 2007-10-26)
		Inventor ProfileHarold Stephen Black Born Apr 14 1898 - Died Dec 11 1983.
		Black, Sir James - Columbia Encyclopedia article about Black, Sir...
		Black, Sir James, 1924â“, Scottish pharmacologist, M.D. Univ. of St. Andrews, 1946.
	www.napoli-pizza.net /Harold_Stephen_Black.html (314 words)

	Author cloud \| LibraryThing
		Bissinger Terry Bisson Mark Bittman Henry Blackaby Simon Blackburn David Alan Black Holly Black Jaid Black Jeremy Black R.
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	www.librarything.com /authorcloud.php (668 words)

	Stephen Spender - Moviefone (Site not responding. Last check: 2007-10-26)
		Stephen Spender: A Literary Life (2005) ISBN 0-19-517816-5; Stephen Spender: The Authorized Biography (2004) ISBN 0-14-027889-3...
		In 1970 Spender became Professor of English at University College in London, a post he held for seven years.
		Stephen Spender - Filmography, Biography, News, Photos, Birth date, Relationships, Stephen Spender Film Clips, and Fun Facts on Moviefone.
	movies.aol.com /celebrity/stephen-spender/200822/main (87 words)

	۞ Harold Stephen Black - Infos und Erklärungen auf www.kunstToday.de (Site not responding. Last check: 2007-10-26)
		Die Arbeiten, die zu der Erfindung führten, fanden in der Zeit um 1930 in den Laboratorien der Western Electric Company in den USA statt (Bell Labs).
		Black erhielt 1937 das US-Patent 2102671 für diese Erfindung.
		Diese Feile hat selbst meinen Herrn Vater überzeugt, der gerade in diesem Bereich eher "manuell" eingestellt ist.
	www.kunsttoday.de /Harold_Stephen_Black (448 words)

	All About Inventors
		In 1895 Italian inventor Guglielmo Marconi built the equipment and transmitted electrical signals through the air from one end of his house to the other, and then from the house to the garden.
		Pioneering research in stroboscopic photography by Harold E. Edgerton was the foundation for the development of the modern electronic speed flash.
		Harold S. Black revolutionized telecommunications by inventing systems that eliminated feedback distortion in telephone calls.
	cybersleuth-kids.com /sleuth/Science/Inventors/index6.htm (157 words)

	Inventors Hall Of Fame Black - goInvention.com (Site not responding. Last check: 2007-10-26)
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		After six years of persistence, Black conceived the principles and equations.....Harold Stephen Black..
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	www.goinvention.com /inventorshalloffameblack (782 words)

	your_nonentity - October 19th, 2006
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		Hawking, Stephen - brief biography of this theoretical physicist from PBS.
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	Harold Stephen Black (Site not responding. Last check: 2007-10-26)
		Harold Stephen Black is an electronic engineer who revolutionized the field of applied by inventing the feedback amplifier in 1927.
		This 1975 recording of the Brandenburg Concertos shows what really can be done with SACD compared to odinary CD technique, even if one is a classical music high end freak and thus satisfied with a two channel reproduction.
		Graphics do not make a game, of course, but they can help.
	www.freeglossary.com /Harold_Stephen_Black (367 words)

	Harold Stephen Black (Site not responding. Last check: 2007-10-26)
		Black ist als der Erfinder des gegengekoppelten Verstärkers bekannt.
		Die Arbeiten, die zu der Erfindungen führten, fanden in der Zeit um 1930 in den Laboratorien der Western Electric Company in USA statt (Bell Labs).
		Es bildet darüberhinaus die Basis für fast alle heute in der Praxis eingesetzten Verstärker.
	www.biologie.de /biowiki/Harold_Stephen_Black (240 words)

	Trivia - Audioholics Home Theater Forums
		As an aside, my father worked for 47 years at Bell Labs, and when he was younger he went through their "in-house" equivalent to a Master's program in EE.
		(early 1950's) His teacher for the course on amplifier design was Black.
		Nice to get tought by the guy who more or less invented negative feedback designs, but it made it hard to question what the teacher was saying!
	forums.audioholics.com /forums/showthread.php?p=107261 (188 words)

	Black Inventions (Site not responding. Last check: 2007-10-26)
		Black inventors, Black Inventions and Black Inventor scientists
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	www.inventionsi.com /blackinventions (304 words)

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