Found in an American publication from the 1980s, this circuit can be found in commercial sound equipment of the time. The list with the component values is given next to the diagram.
This circuit, obtained in a 1983 magazine, can drive loads up to 100 mA if the transistors are...
This JFET amplifier stage was found in the Encyclopedia of Electronic Circuits Volume 5 from 1995....
The circuit shown in the figure uses two of the four operational amplifiers found on the LM324...