Extended range regulated power supply

摘要: An extended range regulated power supply which provides a constant output despite extreme variations in line potential, the present embodiment may exceed 50%. The maintains high efficiency by operating with first unregulated voltage just above minimum required linear regulator to maintain desired voltage. Upon severe low or drop-out conditions, second is connected input of regulators Both potentials are derived from transformer wherein source will be at least necessary for under maximum standby potential switched solid state (FET) switch acts instantaneously provide continuity and configured selectively as well proportional pulse modulated switching action.