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What is active region in common emitter configuration?
Now, we will look at the circuit in which a transistor is connected in common base configuration. Then, the graph showing its active and saturation region will be, Active region is that region in which the emitter base junction is forward biased while the collector base junction is reverse biased.
What happens in active region of BJT?
In active region: For active region, the specified biasing condition is satisfied. When transistor is used for switching purposes, it works in either cut-off or saturation mode. (DC Current gain. Ratio of absolute values).
Which configuration of BJT is mostly used and why?
Common emitter transistor configuration This provides a good overall performance and as such it is often the most widely used configuration. As can be seen from the diagram, in this transistor configuration, the emitter electrode is common to both input and output circuits.
How is an active region defined in BJT?
Active region in BJT in a Common emitter configuration. In BJT for working in active region for a common emitter configuration emitter and base should be in forward bias and base and collector should be in reverse bias.
What does common emitter mean in BJT circuir?
In this configuration, we use emitter as common terminal for both input and output. This common emitter configuration is an inverting amplifier circuit. Here the input is applied between base-emitter region and the output is taken between collector and emitter terminals.
What are the parameters of a common emitter?
This common emitter configuration is an inverting amplifier circuit. Here the input is applied between base-emitter region and the output is taken between collector and emitter terminals. In this configuration the input parameters are V BE and I B and the output parameters are V CE and I C.
Which is the saturation region of the BJT circuir?
(iii) saturation region. The active region has collector region reverse biased and the emitter junction forward biased. For cut-off region, the emitter junction is slightly reverse biased and the collector current is not totally cut-off. And finally for saturation region both the collector and the emitter junction are forward biased.