A bipolar junction transistor is made up of two PN-junctions in the primary current carrying route between the Emitter and Collector terminals, as we saw before. Instead of PN-junctions, the Junction Field Effect Transistor (JUGFET or JFET) has a narrow piece of high resistivity semiconductor material forming a “Channel” of either N-type or P-type silicon for the majority carriers to flow through, with two ohmic electrical connections at either end commonly referred to as the Drain and Source respectively.
The N-channel JFET and the P-channel JFET are the two fundamental types of junction field effect transistors. The channel of an N-channel JFET is doped with donor impurities, resulting in a negative (hence the name N-channel) current flow in the form of electrons.
In this “Junction Field Effect Transistor (JFET) – Fundamentals of Electrical and Electronics” you will learn about the following topics:
- Construction
- Types and Principle of Operation
- JFET Quadratic Characteristics
- Biasing and Load Line
This article Junction Field Effect Transistor (JFET) – Fundamentals of Electrical and Electronics is contributed by Ritesh Thapa, a student of LA GRANDEE International College (LGIC).
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This article Junction Field Effect Transistor (JFET) – Fundamentals of Electrical and Electronics is contributed by Kabita Adhikari, a student of LA GRANDEE International College (LGIC).
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