Found in an Electronic Design from the 80s, this circuit uses an unusual component today, the regulator integrated circuit. MOSFET can be almost any type.
In the figure we show another interesting application for integrated circuit 4001. This circuit...
This audibility or loudness control for sound equipment is from 1992 documentation. The circuit uses...
This circuit was found in an application note of the LTC1164 from Linear Technology of the 1990s....