Abstract: An industrial plating system operative from a relatively high voltage, 60 Hz, three phase a-c source for providing a relatively low voltage pulsed d-c for delivering currents above around 1,000 amperes to plating load and including amplitudes of 3,000 to 5,000 amperes, and including a controlled rectifier operative with the a-c source to provide a rectified d-c output voltage of a preselected high amplitude, an inverter operative with the controlled rectifier and situated at substantially the same physical location for providing a pulsed a-c output of a preselected width and a-c frequency, the a-c frequency being from around 300 Hz to 3000 Hz, a high frequency rectifier operative with the inverter for providing plating loads with a rectified pulsed d-c having d-c amplitude and a preselected pulsed d-c frequency, the pulsed d-c frequency being greater than the preselected a-c frequency, the high frequency rectifier having a high frequency step down power transformer and a pair of high speed diodes operative in

Abstract: An electrical storage battery consisting of one or a plurality of cells, each comprised of a normally positive electrode for reducing a halogen disposed in electrical contact therewith and a normally negative electrode having an oxidizable metal disposed in electrical contact therewith during an electrical discharge of the cell. The cell is filled with an aqueous metal halide electrolyte which is adapted to be circulated between the cell and a storage area containing a replenishable halogen hydrate which is progressively consumed during discharge of the battery. A replenishment of the oxidizable metal is also effected periodically accompanied by a withdrawal of a controlled portion of the electrolyte to maintain the volume thereof within a preselected range.

Abstract: An electrical energy storage device comprising at least one cell containing a normally positive electrode at which a halogen is reduced and a normally negative electrode at which a metal is oxidized during an electrical discharge of the storage device. The halogen and oxidizable metal components consumed during the electrical discharge of the device are regenerated during an electrical recharging of the storage device and the halogen component is recovered and converted to a halogen hydrate for storage in the system.