Vicor Corp.

We design, develop, manufacture, and market modular power components and power systems for converting electrical power (expressed as watts, and represented by the symbol W , with wattage being the product of voltage, expressed as volts, and represented by the symbol V, and current, expressed as amperes, and represented by the symbol I ). In electrically-powered devices utilizing alternating current ( AC ) voltage from a primary AC source (for example, a wall outlet), a power system converts AC voltage into the stable direct current ( DC ) voltage necessary to power subsystems and/or individual applications and devices (known as loads ). In many electronic devices, this DC voltage may be further converted to one or more voltages and currents required by a range of loads. In equipment utilizing DC voltage from a primary DC source (for example, a battery) or a secondary source (such as an AC-DC converter), the initial DC voltage similarly may require further conversion. A power system most commonly incorporates four voltage conversion functions: transformation, isolation, rectification, and regulation. 2 Table of Contents Transformation refers to the process of increasing or decreasing an AC voltage; isolation refers to the electrical separation, for safety, of primary and secondary voltages in a transformer; rectification refers to the process of converting a voltage from AC to DC and/or from DC to AC; and regulation refers to the process of providing a near constant voltage under a range of line and load conditions.