Join Barron Stone for an in-depth discussion in this video Buffer signals, part of Electronics Foundations: Semiconductor Devices.
- [Instructor] One of the simplest op-amp circuits…that utilizes feedback is called a voltage follower.…It's created by simply connecting…the output of the op-amp directly back into…the negative inverting input terminal.…The input signal for the voltage follower goes into…the non-inverting or positive terminal,…and the output signal is simply the output from the op-amp.…The reason this circuit is called a voltage follower…is because the output voltage follows,…or matches, the input voltage.…Since the output voltage is the same as the input voltage,…the voltage follower circuit has a constant gain of one.…
You'll often hear that referred to as unity gain,…which means that the signal passing through the circuit…is neither amplified nor attenuated.…At first glance, a circuit that outputs…the same voltage signal that you put into it,…that may not seem very useful,…but even though the input and output voltage is the same,…this circuit is useful because the impedance…at the input and output terminals is different.…
- 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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