Abstract: A fuel pump system for aircraft includes an auxiliary fuel pump in-line with the primary pump, and an electric motor driving the auxiliary fuel pump at an operational motor speed. The system includes an electric control circuit (ECC) and a pressure sensor to regulate the speed of the electric motor based on the output pressure from the sensor to maintain a constant predetermined output pressure. The system may have additional fault mitigation circuitry configured to automatically switch from a processor-controlled to a fixed voltage as a source of power driving the electric motor at either a regulated speed or a constant fixed speed, respectively. The system may include a switch having user-selectable operational modes, including ECC-controlled mode and a high boost mode selectable if the ECC fails. In high boost mode, the ECC is bypassed to drive the electric motor at a fixed safe speed.

Abstract: A method of controlling a heating, ventilating, and air conditioning system on a customized schedule utilizes a master controller and a plurality of satellite vents. Each of the plurality of satellite vents is associated with a vent address which can be addressed through the master controller. A plurality of actuation commands, wherein each of the actuation commands contains a vent position which is transmitted to a specific vent of the plurality of satellite vents. The master controller utilizes a wireless transmitter to broadcast the actuation commands. Next, each of the plurality of satellite vents periodically listen for the actuation commands. A specific command of the actuation commands is executed if the vent address of the actuation command matches the physical address of the specific vent and a current time matches a set time of the specific command.

Abstract: A method and apparatus for providing uninterrupted DC and AC power for a desktop personal computer is described. The source of the uninterrrupted DC and AC power is derived from an integrated power supply that is sized to fit within the existing housings of most desktop personal computers as a plug-in replacement for existing power supplies. A high degree of efficiency is obtained using an integrated design with the main power conversion derived from a DC/DC dual primary resonant converter. The main primary of the resonant converter is driven from a high voltage DC bus which is supplied from AC mains when available. When the AC mains is unavailable, the second primary of the DC/DC dual primary resonant converter receives power from a low voltage battery source.