Abstract: A composite magnetic core construction to replace conventional magnetic core construction for transformers, inductors, motors, generators, relays, solenoids, and delay lines. The composite core consists of a principal magnetic core section and an alternate magnetic core section. An example for constructing cores with high residual inductance above saturation is a 50% principal magnetics to a 50% alternate magnetics ratio. The alternate magnetics needs to be more economical per pound than the principal magnetics. The alternate magnetics also needs to have the same effective magnetic flux density saturation as the principal magnetics. When these two requirements are met, then the composite core will have the same power density (Watts/lb) as the original conventional core, but will be less expensive.

Abstract: The present invention relates to suppressing transient impulses in a power distribution system and more particularly to a device and method for suppressing transient impulses at frequencies which exceed the power frequencies while maintaining an acceptable "safety" impedance level at the power frequencies.

Abstract: A transformerless conditioner of a power distribution system consists of an electronically enhanced filter (EEF) for suppression of transient impulses on the power line and neutral line, and a transformerless ground conditioner for suppression of transient impulses on the ground line. The filter includes a normal mode filter having an inductor located on the power line and an inductor located on the neutral line between source and load of the power distribution system, and a pair of capacitors arranged in series and connected between the power and neutral lines, whereby a midpoint tap is formed between the pair of capacitors. The EEF also includes a unique common mode filter which is formed by the series connection of either inductor of the power line or the neutral line, or both, to its corresponding capacitor and then to the midpoint, from which an electronic impulse detector is connected to ground.

Abstract: A power conditioning device protects sensitive electronics in modern electronic equipment from disruption or destruction caused by transients which can cause both induction and injection currents into the grounding system of the electronic equipment. This device nominally comprises an isolation transformer and a ground impedance between the earth ground connection from a distribution panel and the safety ground connection to the powered equipment. In addition, this device may also comprise a voltage clamping device such as an MOV and a capacitive filter to provide a complete power line conditioner. This device may be used in systems with guarded or driven grounds, or in a system with a high voltage reference to safety ground. In addition, ground conditioning can be added to a Ground Fault Circuit Interrupter (GFCI) to attenuate ground surge currents.