Join Barron Stone for an in-depth discussion in this video Use a BJT as an amplifier, part of Electronics Foundations: Semiconductor Devices.
- [Instructor] Transistors have two…fundamental applications,…building electric controlled switches…and amplifying electrical signals.…Now, although I frequently use transistors as switches,…I'll admit I rarely use individual transistors…to build amplifiers…because in day to day circuit building,…it's a lot easier for me to use another type…of active component called an operational amplifier,…which I'll cover later in this course.…That said, even if you never build an amplifier…out of BJTs, it's helpful to understand how they work…because transistors are a fundamental component…behind active circuits.…
An amplifier is an electronic device…that can increase the power of a signal…meaning the signal coming out of an amplifier…has more power than the signal that was put into it.…Now, an amplifier just can't magically…create that power out of nothing.…That's not physically possible.…So we'll need to get its power from somewhere else.…The amplifier works by drawing electrical power…from a separate source…and then uses that power to increase the amplitude…
- 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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