Wein bridge oscillator (100khz)

Discussion in 'The Projects Forum' started by sikander1, Mar 23, 2010.

  1. sikander1

    Thread Starter New Member

    Mar 22, 2010
    hi i want to build a weinbridge oscillator oscillating at 100khz..using an op amp (ua741).can any one plz tell me how to determine the component values???
    i knw the formula f=1/2piRC, i need a good asumption of capacitor value and then i can calculate the resistor values???
  2. beenthere

    Retired Moderator

    Apr 20, 2004
  3. Audioguru

    New Member

    Dec 20, 2007
    A 741 opamp works pretty well up to about 9kHz.
    Above 9kHz its output will be slew-rate limited into a triangle wave unless its input level is reduced. At 100kHz its output will be only 3V p-p which is a little more than 1V RMS if it is a sine-wave.

    Most opamps today work perfectly at 100kHz.