Analog Circuits Cookbook, 2nd Edition

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Advanced circuit techniques, components and concepts

Negative approach to positive thinking

Negative components

Negative components may not be called for every day, but can be extremely useful in certain circumstances. They can be easily simulated with passive components plus opamps and one should be aware of the possibilities they offer.

There is often felt to be something odd about negative components, such as negative resistance or inductance, an arcane aura setting them apart from the real world of practical circuit design. The circuit designer in the development labs of a large firm can go along to stores and draw a dozen 100 kΩ resistors or half a dozen 10 μF tantalums for example, but however handy it would be, it is not possible to go and ...