1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Lock in amplifier

  1. Mar 31, 2010 #1
    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
     
  2. jcsd
  3. Mar 31, 2010 #2

    mgb_phys

    User Avatar
    Science Advisor
    Homework Helper

    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
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook