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Lockin Amplifiers Frequently Asked Questions (FAQ)

Lockin Amplifiers Frequently Asked Questions (FAQ)

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1. What are lock-in amplifiers anyway?

 1. What are lock-in amplifiers anyway?

Lock-in amplifiers use the process of synchronous detection to recover signals that have been buried in noise. They act as extremely narrow pass band filters with the pass band centre point selected by a reference signal. For those seeking further information we offer the following links:

Lockin Amplifier Theory of Operation. External site produced by M. Stachel of Faculty of Physics University of Konstanz Germany. Includes theory, diagrams and a Java virtual lockin amplifier.

Lockin Amplifiers as explained by Wikipedia.

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