Join Barron Stone for an in-depth discussion in this video What is a transistor?, part of Electronics Foundations: Semiconductor Devices.
- A transistor is an electronic component…that acts like a valve to control…the amount of current passing through it.…Much like how this valve on the faucet…controls the amount of water flowing through the hose.…A transistor has three terminals.…One terminal brings current into the transistor,…and a second terminal carries that current out.…The third terminal is like this handle,…and it's used to control the amount of current…passing through those other two terminals.…Now unlike this handle which I adjust by physically moving,…we control the current through a…transistor by using an electrical signal.…
Based on that electrical signal,…I can have the transistor operating in one of three modes.…I can turn the transistor so that…the valve is completely open,…and the current passes through it more or less unrestricted.…This is known as the saturation mode,…and the transistor is basically acting like a short circuit.…On the other extreme,…I could close that valve all the way…to completely block the flow of…current through the transistor.…
- 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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