Found in the June 1987 issue of Radio Electronics magazine, this circuit uses well-known CMOS components. The circuit has a CMOS amplifier stage that drives a small speaker.
September 2017 - Mouser Electronics is now offering Microchip MTD6508 engine drivers. These...
This small audio amplifier was found in an American publication in 1975, The integrated circuit used...
This circuit was found in a 90’s EDN. The components used are still common and the sensors can have...