Join Barron Stone for an in-depth discussion in this video Amplify signals, part of Electronics Foundations: Semiconductor Devices.
- [Instructor] As their name suggests…one of the primary uses for operational amplifiers…is to amplify signals.…And one of the simplest op-amp configurations…to do that is the inverting amplifier.…This configuration uses two resistors…to provide divide feedback to the op-amp…and it's called an inverting amplifier…because the output signal will be negative…or a flipped version of the input signal…and scaled by some amount.…One of the resistors connects the input signal…to the inverting or negative op-amp terminal…and I'll refer to that as R in,…the other resistor, R f, provides feedback…from the output of the op-amp…back to the inverting input.…
The non-inverting, or positive op-amp terminal,…is simply connected to ground.…The inverting amplifiers closed-loop voltage gain…which is the ratio of its output voltage…divided by the input voltage,…is equal to negative R f over R in.…R f and R in are both fixed values…that I can choose when designing the circuit.…So for example if I decided to make my feedback…resistor ten kiloohms and the input resistor one kiloohm,…
- 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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