Found in a 1990s Popular Electronics, this circuit uses two transistors to boost the power of a 741 with audio signals. The power depends on the transistors used, which can be general-purpose types.
This two-output circuit was found in General Electric documentation from the 1990s. The circuit uses...
This Baxandall tone control was obtained in an Argentine publication from the 70s. The circuit uses...
This circuit is from Radio Electronics from March 1985. The circuit uses common components at the...