Table of Contents
- 1 How do you know what region a transistor is operating in?
- 2 Can you identify the transistor modes of operation?
- 3 Which are the different operating regions of a transistor?
- 4 Which region does the transistor operate in during amplifier action?
- 5 When transistor is operating in active region the emitter junction is?
- 6 How to determine the region of operation of transistor?
- 7 How does a transistor behave as a closed switch?
- 8 Which current is maximum in the saturation region of a transistor?
How do you know what region a transistor is operating in?
Either forward or reverse biasing is done to the emitter and collector junctions of the transistor….Transistor biasing.
| EMITTER JUNCTION | COLLECTOR JUNCTION | REGION OF OPERATION |
|---|---|---|
| Forward biased | Reverse biased | Active region |
| Reverse biased | Forward biased | Inverse active region |
| Reverse biased | Reverse biased | Cutoff region |
Can you identify the transistor modes of operation?
The transistor can be operated in three modes: Cut-off mode. Saturation mode. Active mode.
Which are the regions of operation of a transistor and how it can be driven into these regions?
Either forward or reverse biasing is done to the emitter and collector junctions of the transistor….Transistor Biasing.
| Emitter Junction | Collector Junction | Region of Operation |
|---|---|---|
| Forward biased | Forward biased | Saturation region |
| Forward biased | Reverse biased | Active region |
Which are the different operating regions of a transistor?
A bipolar junction transistor (BJT) has three operating regions:
- Cut off ( for NPN BJT)
- Active region ( for NPN)
- Saturated ( for NPN)
Which region does the transistor operate in during amplifier action?
The transistor can work in three different regions like active region, cutoff region & saturation region. Transistors are turned off while working in the cut-off region and turned on while working in the saturation region. Transistors work as an amplifier while they work in the active region.
How do you determine when a transistor is saturated and when a transistor is in cut off?
When the transistor is either in saturation or cutoff modes, it dissipates little power. When in cutoff, there is no current flow between collector and emitter thus P = Vce ∗ Ic = 0. When in saturation, the current may be high, but Vce is very small, keeping the power dissipated by the transistor very low.
When transistor is operating in active region the emitter junction is?
The transistor in this operates in an active region, when the collector junction is reverse biased and emitter junction is forward biased.
How to determine the region of operation of transistor?
By checking the biasing of emitter base and collector base junction, the region of operation of transistor can be determined. If both junctions are forward biased, then it is said to operate in saturation region and can be used as a closed switch
What are the different biasing of transistors?
Transistor biasing. 1 Active region. This is the region in which transistors have many applications. This is also called as linear region. A transistor while in this 2 Saturation region. 3 Cutoff region.
How does a transistor behave as a closed switch?
The transistor operates in active region when the emitter junction is forward biased and collector junction is reverse biased. In the active state, collector current is β times the base current, i.e., This is the region in which transistor tends to behave as a closed switch. The transistor has the effect of its collector and Emitter being shorted.
Which current is maximum in the saturation region of a transistor?
The collector and Emitter currents are maximum in this mode of operation. The figure below shows a transistor working in saturation region. The transistor operates in saturation region when both the emitter and collector junctions are forward biased. As it is understood that, in the saturation region the transistor tends to behave as