What is BJT and its type?

What is BJT and its type?

A bipolar junction transistor (BJT) is a type of transistor that uses both electrons and electron holes as charge carriers. BJTs use two junctions between two semiconductor types, n-type and p-type, which are regions in a single crystal of material.

What are the different uses of BJT?

Applications of BJT

• Switching.
• Amplification.
• Converters.
• Automatic switch.
• Temperature sensors.
• Electronic switches.
• Amplifiers.
• High driving capability.

What are the different types of BJT transistor configuration?

The three basic configurations of a BJT are (a) common emitter (CE), (b) common base (CB), (c) common collector (CC) or emitter follower. These basic configurations are shown in Figure 1.

What are types of bipolar junction transistor biasing?

The following discussion treats five common biasing circuits used with class-A bipolar transistor amplifiers:

• Fixed bias.
• Collector-to-base bias.
• Fixed bias with emitter resistor.
• Voltage divider bias or potential divider.
• Emitter bias.

Which are two different types of BJT?

BJTs are of two types namely NPN and PNP based on doping types of the three main terminals. An NPN transistor consists of two semiconductor junctions that have a thin p-doped anode region and PNP transistor also consists of two semiconductor junctions that have a thin n- doped cathode region.

How many BJT are there?

There are two types of BJT – PNP and NPN. Each type has a large collector element and a large emitter element which are doped in the same way. In between these structures is a small layer of the other doping agent called the “base”. Current flows in the collector of a PNP and out of the emitter.

What are the three elements of BJT?

The BJT consists of three different physical regions: the base, the emitter, and the collector as represented by the symbol for an npn device shown in Fig. 5. Each of the three distinct regions is electrically connected to a terminal, allowing connection of the regions to other circuit components.

What are the different types of transistor?

Types of Transistors

• Bipolar Junction Transistor.
• Diffusion Transistor.
• Avalanche Transistor.
• Schottky Transistor.
• Darlington Transistor.
• Heterojunction Bipolar Transistor.
• Field Effect Transistor.
• Junction FET Transistor.

What are the different types of transistor configuration?

Generally there are three different configurations of transistors and they are common base (CB) configuration, common collector (CC) configuration and common emitter (CE) configuration.

How many types of transistors are there?

Transistors are broadly divided into three types: bipolar transistors (bipolar junction transistors: BJTs), field-effect transistors (FETs), and insulated-gate bipolar transistors (IGBTs).

What is BJT and types of BJT?

What is the difference between an UJT and a BJT?

UJT stands for unijunction transistor, while in BJT stands for bipolar junction transistor. UJT is only one junction is present in BJT, while in BJT consist of two junctions. It is two junction transistors.

How is MOSFET different from BJT?

Difference between BJT and MOSFET. The BJT is a bipolar junction transistor whereas MOSFET is a metal oxide semiconductor field effect transistor. A BJT has three terminals namely base, emitter and collector, while a MOSFET has three terminals namely source, drain and gate.

What is the difference between BJT and JFET?

The crucial difference between BJT and JFET is that BJT is a bipolar device while JFET is a unipolar device . It is so because the operation of BJT is dependent on injection and collection of minority charge carriers that includes both electrons and holes. As against JFET is majority carrier device, thus termed as unipolar.

What are the three operating region of BJT?

The operating of BJT can be done in three different regions like active, saturation, and cut-off. In this region, one junction is connected in a forward bias whereas the other one is connected in reverse bias.