Wien Bridge
This Vienna bridge oscillator generates a sinusoidal signal whose frequency depends basically on C2 and C4. The circuit is from an Electronics Now from December 1993.
We found this circuit in an American publication from 1977. The integrated circuit is the 7400 and the...
This circuit has its frequency controlled by a 1MHz crystal. The circuit can be powered by...
The critical component of this circuit is the transformar. We found it in an 1980s documentation....