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Project using op-amp 741

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by dksktm, Jul 14, 2006.

  1. dksktm

    dksktm New Member

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    hey....everyone....I have to do a project using the op-amp 741....can u suggest me any projects ...easy.....fun.....to do....I am just so confused.....i don;t know what to do.....

    dhiraj
     
  2. RadioRon

    RadioRon Well-Known Member

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    Here is a good reference with many simple circuits. You can build these circuits using the 741.
    http://www.electro-tech-online.com/custompdfs/2006/07/AN-31.pdf

    My favorite for a bit of fun is to build an audio notch filter and then hook it up between a source of music and your audio amplifier. Fun to play with.
     
  3. Roff

    Roff Well-Known Member

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    Down near the bottom of this page, you'll find Bill Bowden's Fading Eyes. It's a fun, easy project, and you can use a couple of 741s instead of a 324 (which is a quad op amp).
     
  4. dave

    Dave New Member

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  5. dksktm

    dksktm New Member

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    are there any other experiments....even that one is nice...i want to make it...but i want a few more options.......just 4 fun....:)
     
  6. stevez

    stevez Active Member

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    My son and I built a "light-listener" which was a 741 with a cadmium sulfide photocell as the input - followed by an LM386 audio amplifier (though you might power an earphone without it). With it you could "hear" the output of TV remote controls, the buzz of fluorescent lights, the flicker of a flame, etc. That was a long time ago. I've been tempted to construct a more permanent version.
     
  7. rams

    rams New Member

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    sir where can i get the circuit diagram and explanation for ur "light listener" project.It seems very interesting.I want to do and enjoy it.Can u please help me???
     
  8. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

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    hi rams and welcome,
    I doubt if the OP will reply, this thread is 5 years old..:)
    E
     
  9. audioguru

    audioguru Well-Known Member Most Helpful Member

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    I looked in Google Images and found it. light listener circuit.png
     

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