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For many years, high pressure mercury lamps, so familiar to all of us as street lights, stadium lights, or manufacturing shop lights, have been operated with series inductive ballasts. Recently, however, new types of lamps having characteristics different from those of the common mercury vapor lamp have been developed, requiring new families of inductive ballasts. To eliminate the problem of providing...
The trend of commercial aircraft today is toward larger size and more electric service power. As the aircraft becomes larger and environmental conditions become more severe, stringent design requirements such as a high degree of reliability, minimum operating cost, and minimum weight are imposed on the aircraft electrical power system. In reviewing the electrical power systems installed in present...
The Army is currently investigating new means of power conversion that eventually will lead toward new light weight hardware in order to improve land mobility. Application of solid state power technology has been of particular interest to the Army due to its potentially attractive cost to life cycle performance ratio. However, one of the important design considerations for this new equipment is correct...