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Course of electronics

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Thyristors lesson 80

about 2 years ago
In addition to semiconductor devices of a single-junction (1 layer together with another P N), such as rectifier diodes and transistors UJT, there are two joints (bipolar transistors made with two layers covering a layer N P, or vice versa ) and three or more joints (at least four alternating layers of semiconductor material pnpn), which you are known by the name "THYRISTORS" and originally developed by engineers at General Electric in the U.S. in the decade of the 60. Command...

Phototransistors, and photodiodes photoresist lesson 79

about 2 years ago
Phototransistor A phototransistor is in essence the same as a normal transistor, one that can work two ways: As a normal transistor with the base current Ib (common mode). As phototransistor when the light incident on this element serves as the base current. Ip (illumination mode). You can use both simultaneously, although the phototransistor is used primarily for the base pin unconnected. Ib = 0 The total base current is equal to base current (common mode) + base current (for...

Great personages of history Lesson 78

about 2 years ago
Walter Houser Brattainz (February 10, 1902 - October 13, 1987) was a physicist who along with John Bardeen, invented the transistor. Together with her boss William Shockley, won the Nobel Prize in Physics in 1956.

Great personages of history Lesson 75

about 2 years ago
Thomas Alva Edison (February 11, 1847 - October 18, 1931) was born in Milan (Ohio). Partially deaf, no one knows for sure if it was a result of scarlet fever suffered in childhood, and in their own words was because he was charged by the ears by a railroad to try to get on a wagon train spent his school described as poor student, being trained by his mother to be rejected at school. He had a great love of reading. And it began to try different experiments based on what I read in the textbook.