Wien bridge oscillator II


Posted on May 25, 2012

Wien bridge sine-wave oscillator using two RCA CA3140 op amps cover» 30 Hz to 100 kHz with less than 0 percent total harmonic distortion. The 10k pot is adjusted for the best waveform


Wien bridge oscillator II
Click here to download the full size of the above Circuit.

Capacitor CI and C2 are a two-gang, 450-pF variable with its frame isolated from ground. Maximum output into a 600-ohm load is about 1 volt rms.




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