Join Barron Stone for an in-depth discussion in this video Protect against large signals, part of Electronics Foundations: Semiconductor Devices.
- Some electronic circuits are sensitive…and their components can be easily damaged…if they receive too large of an input signal,…much like how loud noises can hurt my sensitive ears.…If somebody is speaking to me at a reasonable volume -…- Hey Ben, how are ya?…- I'm doing fine Ray, thanks -…that's fine.…But if Ray's yelling in my ears,…- Who are you talking to?!…- that's too loud and can damage my ears,…so I need a way to protect myself…from those loud noises,…like earmuffs.…
- I still don't know who you're talking to!…- [Ben] When working with electronics,…a clipper circuit can be used to protect sensitive equipment…by limiting the amplitude of input signals.…The clipper will remove any parts of a signal…that are above or below a certain threshold voltage.…For example, the equipment I'm using right now…to record this video,…uses an amplifier to boost the audio signal…coming from my microphone,…and then it sends that amplified signal…to an analog-to-digital converter…connected to my computer.…
If for some reason the output voltage…
Author
Barron Stone
Released
9/8/2017- 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
Duration
Views
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Introduction
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Welcome1m 30s
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Use the exercise files1m 55s
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1. Diodes
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Semiconductor materials7m 50s
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What is a diode?7m 32s
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Diode characteristics6m 4s
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2. Diode Applications
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Rectify a signal6m 44s
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Detect the signal peak4m 34s
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3. Special Purpose Diodes
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Light-emitting diodes7m 19s
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Photodiodes6m 42s
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Zener diodes8m 24s
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4. Bipolar Junction Transistors
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What is a transistor?5m 9s
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NPN bipolar junction transistors14m 25s
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BJT characteristics12m 35s
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5. Transistor Applications
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Use a BJT as a switch9m 54s
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Use a BJT as an amplifier11m 51s
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6. Field Effect Transistors
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Field effect transistors11m 47s
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Use a MOSFET as a switch4m 9s
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BJT vs. MOSFET3m 4s
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7. Operational Amplifiers
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Feedback circuits6m 30s
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8. Op-Amp Applications
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Compare signals5m 47s
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Buffer signals5m 18s
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Supply dual voltages8m 3s
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Amplify signals7m 49s
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Filter signals7m 54s
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Combine signals5m 31s
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✓ Solution: Audio equalizer10m 35s
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Conclusion
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Next steps1m 9s
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Video: Protect against large signals