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> BJT - Bipolar junction transistor (Википедия)
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BJT - Bipolar junction transistor (Википедия)
Источник: https://en.wikipedia.org/wiki/Bipolar_junction_transistor

QUOTE
A bipolar junction transistor (bipolar transistor or BJT) is a type of transistor that uses both electron and hole charge carriers. In contrast, unipolar transistors, such as field-effect transistors, only use one kind of charge carrier. For their operation, BJTs use two junctions between two semiconductor types, n-type and p-type.

BJTs are manufactured in two types, NPN and PNP, and are available as individual components, or fabricated in integrated circuits, often in large numbers. The basic function of a BJT is to amplify current. This allows BJTs to be used as amplifiers or switches, giving them wide applicability in electronic equipment, including computers, televisions, mobile phones, audio amplifiers, industrial control, and radio transmitters.


ЗЫ. См. также:
- http://cc.ee.ntu.edu.tw/~lhlu/eecourses/El...tronics_Ch4.pdf - CHAPTER 4. BIPOLAR JUNCTION TRANSISTORS (BJTs)
- http://aries.ucsd.edu/NAJMABADI/CLASS/ECE6...E65_W12-BJT.pdf - Bipolar Junction Transistor (BJT)
- http://www.pitt.edu/~qiw4/Academic/ME2082/...or%20Basics.pdf - Bipolar Transistor Basics


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