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.
August 2016 - It can be obtained from Mouser Electronics the power factor controller NCP1602 from...
Found in American documentation from the 70s, this circuit uses components of the time, uncommon...
September 2017 - Microchip is making available through Mouser Electronics the ARM Cortex® M +...