3. Junction Field Effect Transistors (JFETs)
The chapter discusses the Junction Field Effect Transistor (JFET), outlining its structure, working principles, and various operating regions. It distinguishes between n-channel and p-channel JFETs and compares their characteristics, advantages, and applications. Key concepts include the control mechanisms and performance parameters that define JFET behavior in electronic circuits.
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Sections
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What we have learnt
- JFET is a voltage-controlled, unipolar device.
- It has three regions of operation: Ohmic, Active, Cut-off.
- Current is controlled by gate voltage, not gate current.
Key Concepts
- -- JFET
- A Junction Field Effect Transistor regulated by an electric field that uses voltage to control current.
- -- Operating Regions
- The different states of JFET operation, including Ohmic, Active (Saturation), and Cut-off regions.
- -- Transconductance
- A measure of the change in drain current in relation to the change in gate-to-source voltage.
- -- Output Characteristics
- The graph that depicts the relationship between drain current and drain-source voltage for a given gate-source voltage.
- -- Transfer Characteristics
- The graph that shows the relationship between drain current and gate-source voltage.
Additional Learning Materials
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