The regenerative circuit (or regen) allows an electronic signal to be amplified many times by the same active device. It consists of an amplifying vacuum tube or transistor with its output connected to its input through a feedback loop, providing positive feedback. This circuit was widely used in radio receivers, called regenerative receivers, bet...
Found on
http://en.wikipedia.org/wiki/Regenerative_circuit
(from the article `Armstrong, Edwin H.`) ...in 1906 by Lee De Forest, a pioneer in the development of wireless telegraphy and television. Armstrong made exhaustive measurements to find out ...
Found on
http://www.britannica.com/eb/a-z/r/27
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