NOVELTY - The electrical system has an electromagnetic component e.g. an inductor, with a toroidal core (210) and a winding (212). The core has a core material defining a distributed gap, a magnetic field of less than 5000 Gauss at 200 Ooersteds and core losses at current frequencies of at least 500 hertz. The winding is for transmitting current of at least 40 amperes and having a frequency component of at least 500 hertz. The winding includes terminals and a conductor wrapped around the core between terminals.    USE - Electrical system for supplying power to load by generating power via voltage or current source. Can also be used in any suitable application or environment e.g. variable speed drive systems, uninterruptible power supplies and back-up power systems, such as systems using superconducting magnets, batteries, flywheel, dynamic voltage ampere reactive technology, inverters and or converters for renewable energy systems, including solar, fuel cell, wind turbine, hydrogen, natural gas turbines, hybrid energy vehicles, tractors, cranes, trucks, and other machinery using fuel cells, batteries, hydrogen, wind, solar and other hybrid energy sources, regeneration drive systems for motors, motor testing regenerative systems, and other inverter and or converter applications.    ADVANTAGE - The core formed of e.g. pressed powdered iron alloy, exhibits low core losses in response to high frequencies, making the electromagnetic component e.g. inductor, generate less heat in response to harmonics and other higher frequency noise in the power signal. The exposed surface of the core between turns of the winding facilitates lowering of the component to air thermal resistance, reducing heat dissipation and increasing efficiency, especially in conjunction with the cooling system. The low core losses also reduce the overall power needs of the component and the necessary copper density for the winding. The component is kept small and lightweight and can accommodate higher frequencies without overheating as well as higher currents without saturating, since the core need not be enlarged to reduce heat generation or avoid saturation.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method using an electrical system.    DESCRIPTION OF DRAWING(S) - The drawing shows the perspective view of an inductor as an electromagnetic component.    Core (210)    Winding (212)    Housing (214)