This circuit was obtained in the 1990 Motorola Linear Databook. The circuit uses a 139 series comparator, but other series can be used. The power source need not be symmetric.
This servo circuit was found in 1969 Motorola documentation. Integrated circuits and transistors are...
This circuit was found in the March 1990 issue of Radio Electronics magazine. The circuit can be...
May 2017 - Mouser Electronics is already stocked with ECS SMD crystals for frequencies in the 16...