A compensated pulsed alternator is a generator capable of delivering high power energy pulses with current waveform flexibility. This versatile machine has applications in various fields where power density is at a premium. Recent advances in applying fiberIepoxy composites to rotating electrical machinery (1) have greatly enhanced the power density capabilities of this machine. A characteristic of these new machines is an absence of ferromagnetic material in the magnetic circuit, and they are therefore referred to as >air-core> compulsators. This paper discusses the topological considerations and the capabilities of the family of machines called the air-core compulsators.