Question
Download Solution PDFWhich type of mode is used as amplifier?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is option 3.
Bipolar junction transistor
- The Bipolar Junction Transistor (BJT) is a three-terminal device i.e. Base, Emitter, and Collector.
- There are two main types of bipolar junction transistors the NPN and the PNP transistor.
- The emitter is a heavily doped region of the BJT transistor, providing the majority of carriers into the base region.
- The base region is a thin, lightly doped region sandwiched between the emitter and collector.
- The majority of carriers flows from the emitter pass through the base region and its flow can be externally controlled.
Operating Modes of Transistor
|
Mode |
EB Junction |
CB Junction |
Application |
|
Cut-off |
Reverse bias |
Reverse bias |
OFF switch |
|
Active |
Forward bias |
Reverse bias |
Amplifier |
|
Saturation |
Forward bias |
Forward bias |
ON switch |
|
Reverse Active |
Reverse bias |
Forward bias |
Attenuator |
Last updated on May 9, 2025
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