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Various semiconductor diodes. Left: A four-diode bridge rectifier. Next to it is a 1N4148 signal diode. ... In 1919, the year tetrodes were invented, ...
Nick Holonyak Jr. (/ h ʌ l ɒ n j æ k / huh-LON-yak; November 3, 1928 – September 18, 2022) was an American engineer and educator.He is noted particularly for his 1962 invention and first demonstration of a semiconductor laser diode that emitted visible light.
The first LED was created by Soviet inventor Oleg Losev [9] in 1927, but electroluminescence was already known for 20 years, and relied on a diode made of silicon carbide. Commercially viable LEDs only became available after Texas Instruments engineers patented efficient near-infrared emission from a diode based on GaAs in 1962.
German inventor Karl Ferdinand Braun invented cathode ray oscilloscope (CRO) 1901: First transatlantic radio transmission by Guglielmo Marconi 1901: American engineer Peter Cooper Hewitt invented the Fluorescent lamp: 1904: English engineer John Ambrose Fleming invented the diode: 1906: American inventor Lee de Forest invented the triode: 1908
Edison in 1861. Thomas Edison was born in 1847 in Milan, Ohio, but grew up in Port Huron, Michigan, after the family moved there in 1854. [8] He was the seventh and last child of Samuel Ogden Edison Jr. (1804–1896, born in Marshalltown, Nova Scotia) and Nancy Matthews Elliott (1810–1871, born in Chenango County, New York).
Shuji Nakamura (中村 修二, Nakamura Shūji, born May 22, 1954) is a Japanese-American electronic engineer and inventor of the blue LED, a major breakthrough in lighting technology. [5]
Although the first solid-state electronic device was the cat's whisker detector, a crude semiconductor diode invented around 1904, solid-state electronics started with the invention of the transistor in 1947. [7]
He invented the thermionic diode 1873 (for which alternate credit was sometimes later given to Edison's assistant W. J. Hammer) [10] and coined the term eutectic in 1884. Guthrie wrote Elements of Heat in 1868 and Magnetism and Electricity in 1873 (published in 1876). [11] Guthrie was also a linguist, playwright, and poet.