An introduction to phase-sensitive amplifiers: An inexpensive student instrument
Abstract
The principle of operation of phase-sensitive amplifiers is discussed. Three examples of the use of the phase-sensitive amplifier, or ''lock-in,'' are given. The examples have been chosen to be suitable for undergraduate laboratory use. The paper is concluded with the description of an inexpensive ''student'' lock-in amplifier which has an overall voltage gain of 1000.
- Publication:
-
American Journal of Physics
- Pub Date:
- September 1975
- DOI:
- 10.1119/1.9690
- Bibcode:
- 1975AmJPh..43..801T
- Keywords:
-
- 01.50.Pa;
- 84.30.Le;
- Laboratory experiments and apparatus;
- Amplifiers