anyone can help me??

Discussion in 'General Electronics Chat' started by shyder13, Jan 17, 2010.

  1. shyder13

    Thread Starter New Member

    Jan 17, 2010
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    0
    i got d very noob(lazy ) probelm though...


    can anyone help me ?? i really need an sample circuit.. using 4pcs of LM 741 op-amps..


    tnx a lot
     
  2. Wendy

    Moderator

    Mar 24, 2008
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    Are you just wanting to show how to use them?

    A good circuit would be a Bubba oscillator.

    Look it up in this TI abstract, chapter 15.7.4. It is simple and effective.

    Sine Wave Oscillators

    The 741 is a pretty old op amp, with some not so hot specs. Drop that frequency down a lot, say 1Khz.
     
  3. shyder13

    Thread Starter New Member

    Jan 17, 2010
    3
    0
    tnx for d reply


    uhmm i need an schematic diagram of a circuit with 4pcs of 741 op- amps..


    :p goin' to use this for a school activity :p
     
  4. Wendy

    Moderator

    Mar 24, 2008
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    Did you look up the chapter? It shows exactly that. You need to read it, then ask questions. When you say 4 pieces I assume you are talking about 4 separate 741 chips.
     
  5. shyder13

    Thread Starter New Member

    Jan 17, 2010
    3
    0
    uhhmm another nooby question


    about dat chapter.. i saw d circuit u pointing out... on page 19


    wat does Vout(sine/cosine) mean? :p hehehe
     
  6. Wendy

    Moderator

    Mar 24, 2008
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    Same waveform, but they are 90° apart. It is a trig function.
     
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