sine wave generator

Discussion in 'Homework Help' started by nash, Dec 21, 2004.

  1. nash

    Thread Starter New Member

    Dec 18, 2004

    in my current project i need to build my own sine wave generator. when i looked it up in the internet the things i found were unnecessarily compilicated, i mean some filtersand extra stuff.

    i am a beginner and i wonder if i can build a elementary circuit toget a sine wave output.

    thanks for your help...
  2. beenthere

    Retired Moderator

    Apr 20, 2004

    The attached circuit is for a Wein bridge oscillator. The non-linear resistive element is the lamp. The one used is rated 28 volts & 80 mills. Different lamps will work, but the feedback resistor will have to be changed. I think the oscillator does better with 470 ohms rather than the 360 shown. With the values given, this one runs at close to 1000 Hz. Not every op amp will work, either. The Op27 is good, but a CA3140 won't go.