BJT Assignment Answers

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In 1948, bipolar transistor was invented and it brought about a revolution in the field of electronics. Previously, vacuum tubes were prominently used and it was mechanically fragile, large and also power hungry. The invention of bipolar transistor saw it being replaced by small, power-thrifty and rugged crystalline silicone specks. Understanding modern electronics hugely involves understanding the functioning of transistors. If you have BJT assignment answers that you cannot figure out, you can always seek the assistance of our experts.

The semi-conductor theory

Understanding the application and practical functionality of bipolar junction transistors requires you to have a good understanding of semiconductor theory as well. You must know what N- and P-doped semiconductors are and the functional characteristics of PN diode junctions. You must also be used to terms like forward biased and reverse biased.

If these concepts are yet unclear to you, it is better you get accustomed to it before proceeding with your BJT homework answers. You can seek the assistance of our online tutors for that. Our tutors will make sure that everything is well covered and all concepts are well discussed. You will get detailed explanation in your homework, thus allowing you to grasp the concepts better.

Why bipolar?

BJT are called bipolar since the main flow of electrons takes place through them in two types of semi-conductor material: The P-type and the N-type, when the main current flows from collector to emitter (or vice versa). Holes and electrons are the two charge carriers that comprise the current through transistor.

PNP and NPN transistor

A bipolar junction transistor has three terminals that are connected to three doped semiconductor regions, either PNP or NPN. There is a specific name for each layer that forms the transistor. There is a wire contact for each layer to connect it to a circuit. Understanding the functionalities of PNP and NPN transistors can help you a lot with your BJT homework answers.

PNP and NPN transistors differ functionally in terms of the proper biasing or polarity of the junctions during operations. For any concerned operation state, the voltage polarities and current directions for both kinds of transistors are exactly opposite to each other.

Application of BJT

Bipolar junction transistors are used in discrete circuit design as it is widely available and also because of its high output resistance and trans conductance, which is better than that of MOSFET. These transistors are also suitable for high frequency application, which is why they are useful for wireless systems in radio frequency.

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