What Is The Use Of Active Region Of Transistor?

What is active region of transistor?

Active region This is also called as linear region.

A transistor while in this region, acts better as an Amplifier.

This region lies between saturation and cutoff.

The transistor operates in active region when the emitter junction is forward biased and collector junction is reverse biased..

What is the main use of a transistor?

A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. It is composed of semiconductor material usually with at least three terminals for connection to an external circuit.

What is the PNP transistor?

A PNP transistor is a bipolar junction transistor constructed by sandwiching an N-type semiconductor between two P-type semiconductors. A PNP transistor has three terminals – a Collector (C), Emitter (E) and Base (B). The PNP transistor behaves like two PN junctions diodes connected back to back.

What is the symbol of PNP transistor?

PNP Transistor Symbol The symbol of P-N-P consists of three terminals emitter, base, and the collector. The arrow is sharply pointing towards the base indicating the flow of current from the emitter terminal to the base.

Why BJT is called bipolar?

Bipolar transistors are called bipolar because the main flow of current through them takes place in two types of semiconductor material: P and N, as the main current goes from emitter to collector (or vice versa).

What is quiescent operating point?

The operating point of a device, also known as bias point, quiescent point, or Q-point, is the DC voltage or current at a specified terminal of an active device (a transistor or vacuum tube) with no input signal applied. A bias circuit is a portion of the device’s circuit which supplies this steady current or voltage.

How do you determine the region of a 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 transistor is said to be in cutoff region and acts like off switch.

What are the three operating regions of a transistor?

A BJT consists of three differently doped semiconductor regions: the emitter region, the base region and the collector region. These regions are, respectively, p type, n type and p type in a PNP transistor, and n type, p type and n type in an NPN transistor.

What is the cutoff region?

The Cutoff Region of a FET transistor is the region where the drain-source channel resistance is at its maximum and there is no no drain current, ID, flowing from the drain to the source of the FET transistor. In this region, the transistor is off.

What is the cutoff region of a transistor?

Whenever we observe the terminals of a BJT and see that the emitter-base junction is not at least 0.6-0.7 volts, the transistor is in the cutoff region. In cutoff, the transistor appears as an open circuit between the collector and emitter terminals.

What is IC saturation?

When the transistor operates in the Saturation then the voltage between collector and emitter terminal (Vce) is very low (typically it is 0.1 to 0.2 V), and the collector current Ic is maximum. Steps to Identify the Saturation in BJT : 1) Calculate the Ic(sat), the collector current in the saturation. (

What is the saturation region condition?

Saturation region is one in which both Emitter Base and Base Collector junctions of the transistor are forward biased. In this region high currents flows through the transistor, as both junctions of the transistor are forward biased and bulk resistance offered is very much less.