This circuit appeared in the September 1973 issue of Radio Electronics magazine and was recommended for a synthesizer project. The circuit is for audio signals and has control inputs.
I found this circuit in Popular Electronics in July 1991. It generates an accurate 100 kHz signal,...
The circuit shown in the figure is suggested by Texas Instruments in its Linear Circuits...
This amplifier for sound equipment was found in the Philips Databook of 1990. The circuit can be...