This Wien bridge oscillator was found in a 90's EDN. The components are from that time and the signal generated is sinusoidal.
This circuit was found in Electronics Handbook, Vol XIII 1993 and consists of a simple direction...
Found in National Semiconductor documentation from the 1990s, this circuit corrects the curvature of...
This shield circuit for PC was found in an English documentation from 1996. The current of the...