Join Barron Stone for an in-depth discussion in this video Field effect transistors, part of Electronics Foundations: Semiconductor Devices.
- [Instructor] Unlike Bipolar Junction Transistors…which work by biasing a pair of P-N junctions,…Field-Effect Transistors turn on and off…by using an electric field to control the behavior…of a semiconductor material,…making it more or less conductive.…There are two main types of Field-Effect Transistors,…Junction Field-Effect Transistors referred to as JFETs…and Metal-Oxide Semiconductor Field-Effect Transistors…or MOSFETs.…There are a lot of similarities between JFETs and MOSFETs,…but MOSFETs are more widely used,…because they have a higher input impedance than JFETs…so for this course, I'll be focusing primarily on MOSFETs.…
The physical structure of a MOSFET begins with a slab…of doped semiconductor material called the body.…And for this example, I'll use P-Type Semiconductor material…for the body.…A small section of oppositely doped material,…called a well, is deposited near each end of the body…and in this case those wells are N-Type material.…One of those wells is connected…to a terminal called the source…
- Semiconductor materials
- Diode applications
- Rectifying a signal
- Detecting the signal peak
- Protecting against large signals, reverse current, and flyback voltage
- Special purpose zener diodes, Schottky diodes, and photodiodes
- NPN and PNP bipolar junction transistors
- Using a BJT as a switch
- Field effect transistors
- Differences between BJTs and MOSFETs
- Operational amplifiers
- Op-amp applications
- Comparing signals
- Buffering signals
- Amplifying signals
- Filtering signals
- Combining signals
Skill Level Intermediate
Learning to use MakerBot 3D Printerswith Kacie Hultgren1h 5m Appropriate for all
2. Diode Applications
3. Special Purpose Diodes
4. Bipolar Junction Transistors
5. Transistor Applications
6. Field Effect Transistors
7. Operational Amplifiers
Feedback circuits6m 30s
8. Op-Amp Applications
Next steps1m 9s
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