Lock in amplifier

  • #1
sunshine111
10
0
hi,
I am interested to know how the lock in amplifier works?
It is very commonly seen with oscilloscope, but I fail to grasp the idea behind it?
I would appreciate any lecture notes or sites which give clear and precise understanding of it.


Thanks
 

Answers and Replies

  • #2
mgb_phys
Science Advisor
Homework Helper
7,819
15
The principle of why it works/is used or the details of how the internal circuits achieve this?

There is a good tutorial linked to form the wiki article http://www.bentham.co.uk/pdf/F225.pdf
 

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