English

Lock-in amplifiers: principles and applications

An e-edition of the classic textbook Lock-in Amplifiers: principles and applications, originally published by the UK Institution of Electrical Engineers in May 1983. The e-edition has been newly compiled from the original typescript and diagrams with minor corrections but no substantial changes to the original text. The book was written for all users of lock-in amplifier equipment and for those with an interest in the practical aspects of signal recovery and measurement using synchronous detection. Among the topics included are the principles of phase-sensitive detection, applications for two-phase lock-in amplifiers, the problems of phase-locking to very noisy signals, a review of system configurations for heterodyne and PWM lock-in amplifiers and the use of lock-in amplifiers in computer-controlled measurements. The numerous appendices cover selected topics in signal and noise theory and the principles and practice of amplifier noise-matching. The material is presented at systems level throughout and it is intended that the treatment will prove both interesting and useful to specialists and generalists alike.

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