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Recommendations for Op Amp Applications

If you already understand the basics of Op Amps, you can expand your knowledge by looking at some circuits in which they are applied: Try to figure out how they work, or, even better, build them yourself and play with them. The following links provide you with a lot of examples. But if you are new to Op Amps, you might first want to look at some general books on Op Amps.

Half of Carter SBOA092A Handbook Of Operational Amplifier Applications is an introduction to Op Amps, the other half a collection of Op Amps circuits. Most of them are quite simple, some of moderate complexity. A nice circuit collection if you are relatively new to Op Amps.

Even though the original of the app note National AN-20 An Applications Guide For Op Amps is from 1968, it still provides nice explanations of 26 Op Amp circuits, ranging in complexity from the simple inverting amplifier to a full wave rectifier and averaging filter circuit.

If you own (or can borrow) The Art of Electronics, you can find a nice collection of 31 Op Amp circuits starting on page 252. They include no explanations, but reading the preceeding chapter 4 on feedback and Op Amps should provide you with enough background to understand them (and you will find many other Op Amp circuits in this chapter). Other chapters contain some fine circuits too, like two Wien Bridge Oscillators (p.297), a wide range VCO (p. 306), a precision amplifier with autonulling (p.393, with a very detailed discussion on techniques for precision design) and a ultra now noise Op Amp circuit (p. 470).

The app note National AN31 Op Amp Circuit Collection consists of the schematics of 87 Op Amp circuits, but without any explanation (except for their names), so this is only for you if you already have a solid knowledge about Op Amps.

The app note Wong AN106 A Collection Of Amp Applications contains 38 advanced applications, most of them with good explanations. But most of them require some special Op Amps. If you want to build the circuits you should already have some experience.

If you are new to electronics or to Op Amps, the classic app note Widlar AN-4 Monolithic Op Amp - The Universal Linear Component from 1968 will confuse you, because some things to which the note refers are very outdated. But if you have some experience and can recognize this things you can find some nice inspiration here.

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