Abstract: Multi-layer laminated structures on which electrical devices may be mounted, methods for fabricating such structures, and power supplies including such structures are disclosed. One such multi-layer laminated structure include a first portion on which at least one electrical device may be mounted and further includes a portion that overlays a fractional portion of a major surface of the first portion and on which at least one electrical device may be mounted.

Abstract: This invention relates to automatic dual mode battery charging circuit which includes rectifying means and an adjustable voltage rectifier energized by the rectifying means and providing an output to a battery to be charged. The circuit includes a voltage controller connected to the voltage regulator means to set the level of voltage output from the voltage regulator and hence the charging current to the battery. The voltage regulating means provides two modes of operation, namely, a fast charge and a float mode of operation. A current detector connecting in series circuit with the voltage regulator and the battery provides a means for detecting current flow through the battery and controls the operation of the voltage controller, to change the output of the voltage regulating means between the two modes of operation.

Abstract: A plug in power supply incorporating a ferro resonant transformer mounted on a pair of opposite "E" laminations to provide a low profile magnetic circuit and windings thereon combined with an electronic voltage regulator in which the regulation required therefrom because of the transformer regulation is relatively low and the electronic power component thereof will therefore not be required to dissipate a large amount of power. This enables packaging in a sealed container with a heat sink mounting the power transistor to uniformly distribute the heat thereon and provide a safe plug in power supply.