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| The Basics | Variations in Feedback Circuits | Mixing Analog and Digital Technologies | Generating Waveforms |
| Operational Amplifiers | Current Mirrors | Differential Amplifiers |
| Characteristics of Operational Amplifiers | Inside the 741 |

Analog Circuits: Operational Amplifiers

We said at the start of this set of pages that the operational amplifier (op amp) was the heart of any analog computer, and all of our calculations were based on the assumption that the op amp is an ideal, perfect device. Of course, in reality that isn't true. So what is the truth about op amps? What are their real-world characteristics and what really goes on inside them?

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