This Wien bridge oscillator was found in Radio Electronics from the 90s. The circuit uses the 741 which is a current component. The circuit requires a symmetrical power source.
The integrated circuit is from the time. This low-power circuit was found in the April 1973 issue...
This circuit is suggested by a 1965 General Electric documentation. The triac must be in...
This circuit with silicon transistors at the time was found in the Radio Electronics magazine of...