Join Barron Stone for an in-depth discussion in this video Protect against reverse current, part of Electronics Foundations: Semiconductor Devices.
- [Instructor] One of the quickest way to accidentally…destroy an electronic device…is to connect it to the power supply backwards.…It's an easy mistake to make if the power connector…is not polarized, if you're not paying attention you might…accidentally mix up the red and black power wires,…or maybe you somehow stick batteries…into a device backwards.…Those are all mistakes that I've personally made…at some point in time in the past.…So to protect your electronic circuits…against users like me, it's a good idea to…include protection against reverse current…if it could potentially damage your device.…
Fortunately, that's easy to do by connecting a diode…in series with the positive side of a DC power source.…This reverse protection diode insures that the current…will only flow in the forward direction…so the DC power source will only ever apply a positive…voltage to the circuit.…If the power source is connected in the correct orientation…current will flow through the diode to the device…and everything works likes it's supposed to.…
- 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 Intermediate
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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