Category Archives: Transistor
Bipolar Junction Transistor Announced
Today in 1951, the bipolar junction transistor was announced by its inventor, William Shockley. It was an improvement over the bipolar point-contact transistor which was invented four years earlier by John Bardeen and Walter Brattain and became the device of … Continue reading
Phototransistor Invented
Today in 1950, the invention of the phototransistor was announced by Bell Telephone Laboratories. This was a transistor operated by light rather than electric current, invented by Dr. John Northrup Shive. Last year,, Bob Metcalfe reviewed a new history of Bell Labs, The Idea … Continue reading
Bell Labs’ Phototransistor
Today in 1950, the invention of the phototransistor was announced by Bell Telephone Laboratories. This was a transistor operated by light rather than electric current, invented by Dr. John Northrup Shive. A few weeks ago, Bob Metcalfe reviewed a new history of Bell … Continue reading
Posted in Bell Labs, Innovation, Transistor
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