Abstract: The present invention provides a system and building for generating electricity using wind power. The invention includes an enclosure, a wind turbine/generator and two or more air ducts. The enclosure, which is to be mounted within or in close proximity to a building, has an air intake and an air exhaust has an air intake and an air exhaust. The wind turbine/generator generates electricity from the wind received form the air intake and is disposed within the enclosure between the air intake and the air exhaust. Each air duct has a first end connected to an air duct intake device and second end connected to the enclosure air intake.

Abstract: The present invention provides to a method and apparatus for minimizing or preventing negative current build up in DC-DC converters with synchronous rectification. The method turns the first synchronous rectifier off when the negative current is present in the first secondary winding and the first synchronous rectifier is on, and turns the second synchronous rectifier off when the negative current is present in the second secondary winding and the second synchronous rectifier is on.