From the course: Electronics Foundations: Fundamentals
Join today to access over 23,200 courses taught by industry experts.
Ideal vs. real-world power sources
From the course: Electronics Foundations: Fundamentals
Ideal vs. real-world power sources
- When designing electronic circuits, we often simplify things by pretending that voltage sources are ideal, meaning that they can maintain a constant voltage regardless of the load that's attached to them. For example, if I'm designing a circuit to be powered by a nine-volt battery, I'll treat that battery as if it always has exactly nine-volts between the two terminals. While this abstraction makes analysis and circuit design easier, it's important to keep in mind the real world physical limitations of that battery. If I was using the battery to power in LED that only consumed a few milliwatts, then that simplification would work just fine. But if I tried to use that same battery to power an electric car that requires thousands of watts, it wouldn't work. Even if the electric car motor only required nine-volts, the chemical reactions in a tiny little nine-volt battery simply can't supply enough current to produce the…
Practice while you learn with exercise files
Download the files the instructor uses to teach the course. Follow along and learn by watching, listening and practicing.
Download courses and learn on the go
Watch courses on your mobile device without an internet connection. Download courses using your iOS or Android LinkedIn Learning app.