Analog circuits project idea help

Discussion in 'The Projects Forum' started by ddickey, Jan 9, 2012.

  1. ddickey

    Thread Starter Member

    Sep 28, 2011
    55
    1
    I need some ideas for a project in Analog circuits class. Any ideas welcome.
     
  2. russpatterson

    Member

    Feb 1, 2010
    351
    16
    Do a plesmiograph, (optical heart rate monitor). Plenty of analogue there. Google 'UCSD heart rate monitor' for a good powerpoint on a class project.

    Make an anlog synth module that works with the Eurorack format. Google 'Astable multivibrator' and put pots for the resistors. You'll have an interesting noise maker in no time.

    Make an audio amp.

    Make a linear solar charge controller.
     
    Last edited: Jan 10, 2012
  3. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    How about a spectrum analyzer?
     
  4. ddickey

    Thread Starter Member

    Sep 28, 2011
    55
    1
    Excellent ideas, thanks.
     
  5. PaulEE

    Member

    Dec 23, 2011
    423
    32
    An electrometer/null meter is a very interesting experience, also.

    Try sensing 10 microvolts with a 741. When you realize that the gain resistors need to be so high that the opamp itself causes the entire circuit to not work, start asking questions. Eventually, you'll settle on an LMC6001 for its superior input bias currents (or lack thereof), ridiculously-high input impedance, low offset voltage/current, and profoundly low current noise.

    A month later, you'll have learned a TON about a TON.

    :)
     
  6. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
    6,357
    718
    Telescope tracking drive for equatorial mount
    Solar tracking for solar panels
    5 band parametric equalizer for audio
    3 band active crossover with adj bass boost on lowest output
    Electrostatic speakers (more mechanical than electronic)
    A decent Bi-Amp speaker system for computer, w/sub and surround decoder

    Get an LM741 Op Amp to have a flat frequency response from DC to 30kHz. :eek::D
     
  7. PaulEE

    Member

    Dec 23, 2011
    423
    32
    +1 on the 741 comment! :p
     
  8. ddickey

    Thread Starter Member

    Sep 28, 2011
    55
    1
    I've decided to do the optical heart rate monitor. Now I've got to get a parts list together.
     
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