From the course: Electronics Foundations: Semiconductor Devices
Join today to access over 22,700 courses taught by industry experts or purchase this course individually.
Feedback circuits
From the course: Electronics Foundations: Semiconductor Devices
Feedback circuits
- Many op amp circuits use a closed loop configuration which uses external circuitry to route some portion of the output signal around to feed it back into the op amp as one of the inputs, creating a feedback loop. That feedback loop enables the op amp to effectively monitor its output signal. So it can keep from overcompensating for changes to the input signal. That helps the op amp stabilize its behavior to produce and maintain the desired output voltage. I use a similar form of feedback to stabilize myself when I'm riding a bike. Imagine for a moment that I'm an op amp. One of my input are the map directions that I'm getting from my phone. And the other input is looking ahead at the road to see where I'm going. My output based on those inputs is to turn my handlebars to the left or to the right. Changing my output causes my bike to turn. And by looking ahead to see where I'm going, I can see if I've turned too much…
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.