Analog Circuit Topics

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Analog Circuit Topics

In this set of pages we will deal with the concepts involved in analog computers. Then we will take these fundamental concepts and expand them into related areas. The central circuit component throughout this section will be the operational amplifier (op amp). We will explore the inner workings of this device as well as various circuits based on it.

The Basics: Before we can use operational amplifiers or the analog computers that are built around them, we must understand something about what an op amp is and why it behaves as it does.
Variations in Feedback Circuits: Because the behavior of the op amp depends on the input and feedback circuits, we can make it do many interesting things.
Mixing Analog and Digital Technologies: There are many cases when we need to convert back and forth between analog signals and equivalent digital codes.
Generating Waveforms: Some feedsback circuits can be used with one or more op amps to create a circuit with no input signal, but whose output voltage can never settle to a final resting point. Such circuits can generate some very useful waveforms.
Operational Amplifiers: Real-world characteristics and the internal circuit of the common type 741 operational amplifier IC.