Join Barron Stone for an in-depth discussion in this video BJT vs. MOSFET, part of Electronics Foundations: Semiconductor Devices.
- [Lecturer] Although BJTs and MOSFETs can be used…for similar purposes they are different types…of transistors that work in different ways…and each have their own set of pros and cons.…Deciding whether to use a BJT or a MOSFET…for certain projects can be a bit of a struggle…and unfortunately there isn't a straightforward answer…for which one is best to use,…it depends on what you're doing.…So, to help with planning your next electronics project…I'll discuss some of the pros and cons of each one.…
BJTs tend to have better, more linear gain characteristics…and can give you a lot higher voltage gain than MOSFETs.…They're also able to handle higher output currents…and have a lower output impedance.…That gives BJTs a huge advantage over MOSFETs…for building amplifier circuits…that need to provide a significant amount of output power…and or drive loads that have low input impedance.…MOSFETs are going to have a harder time…driving a low impedance load…because they have a higher output impedance.…
That said, the advantage of MOSFETs…
- 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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