Abstract: An emergency detection and notification system provides autonomous mapping of locations of a building or other environment through a plurality of emergency notification units. The emergency notification units utilize wireless signals to generate topology information that identifies the location of the emergency notification units, the outermost emergency notification units of which identify the egress locations of a building. Upon detection of a hazard, the emergency detection and notification system determines the location of one or more hazards using the topology information.

Abstract: An ultraviolet sanitization fixture comprising a plurality of emitters that emit UVC radiation to render various pathogens inert. The plurality of emitters may be organized into a number of sets, with each set emitting distinct UVC radiation wavelengths and being independently controlled. One of the sets of emitters may be operated according to various emission thresholds and reset triggers. In this manner, the ultraviolet sanitization fixture efficiently provides germicidal effects while taking health and safety into account.

Abstract: An emergency lighting system provides testing and reporting functionality in a rapidly repeatable fashion for environments with numerous emergency lighting units. In one or more embodiments, the emergency lighting system comprises a plurality of emergency lighting units capable of conducting one or more tests and reporting their operating condition as test results. One or more terminals receive and aggregate the test results and present the same to a user. Emergency lighting units having an undesirable operating condition can then be readily identified and addressed.

Abstract: An emergency lighting system provides testing and reporting functionality in a rapidly repeatable fashion for environments with numerous emergency lighting units. In one or more embodiments, the emergency lighting system comprises a plurality of emergency lighting units capable of conducting one or more tests and reporting their operating condition as test results. One or more terminals receive and aggregate the test results and present the same to a user. Emergency lighting units having an undesirable operating condition can then be readily identified and addressed.

Abstract: An emergency lighting system provides autonomous mapping of egress locations of a building or other environment through a plurality of emergency lighting units. The emergency lighting units utilizes wireless signals to generate topology information that identifies the location of the emergency lighting units, the outermost emergency lighting units of which identify the egress locations of a building. During an emergency situation the emergency lighting system activates one or more illumination devices.

Abstract: An emergency lighting system provides autonomous mapping of egress locations of a building or other environment through a plurality of emergency lighting units. The emergency lighting units utilizes wireless signals to generate topology information that identifies the location of the emergency lighting units, the outermost emergency lighting units of which identify the egress locations of a building. During an emergency situation the emergency lighting system activates one or more illumination devices and directs occupants to one or more egress locations based on various criteria.

Abstract: A fully variable controller allows wide range of output voltages and output currents to be programmed therein. In this manner, a power supply including the fully variable controller can power a wide range of electrical loads having distinct voltage and current requirements. The fully variable controller includes a control unit, a voltage regulator and a current regulator configured, respectively, to provide and maintain voltage and current according to an output voltage and output current programmed into the fully variable controller.

Abstract: A variable output module provides accurate full range dimming or adjustment of power output. The variable output module utilizes the characteristics of an AC or other periodic signal rather than its power output to accurately determine the level of dimming a user desires. In this manner, the variable output module provides accurate full range dimming without the need for calibration to specific AC signals. The variable output module can detect the period of an AC signal allowing the driver to be used with various frequencies without the need for calibration. In one or more embodiments, the driver compares the pulse widths of a dimmed AC signal to the period of the AC signal to determine the desired level of dimming.

Abstract: The invention relates to a power transmission system for transmitting electrical power from a power source to a load. The system comprises a capacitive and lossy transmission line or cable and a transformer device. The transformer device comprises a magnetic core and a first winding wound around a first axis of the magnetic core. The first end of the transmission line or cable is connected to the power source and the second end of the transmission line is connected to the transformer device. A second winding wound around the first axis of the magnetic core, where the second winding is connected to the load. A control winding is wound around a second axis of the magnetic core, where the first axis and the second axis are orthogonal axes to that when the first winding, the second winding and/or the control winding are energized, orthogonal fluxes are generated in the magnetic core.

Abstract: A dimmable LED driver provides accurate full range dimming for LED lighting. The driver utilizes the timing of an AC signal rather than its power output or other characteristics to accurately determine the level of light a user desires. In this manner, the driver provides accurate full range dimming without the need for calibration to specific AC power levels. The driver may detect the period of an AC signal allowing the driver to be used with various frequencies without the need for calibration. In one or more embodiments, the driver compares the pulse widths of a dimmed AC signal to the period of the AC signal to determine the desired light level. The driver may comprise a signal processor and controller in one or more embodiments.

Abstract: A dimmable LED driver provides accurate full range dimming for LED lighting. The driver utilizes the timing of an AC signal rather than its power output or other characteristics to accurately determine the level of light a user desires. In this manner, the driver provides accurate full range dimming without the need for calibration to specific AC power levels. The driver may detect the period of an AC signal allowing the driver to be used with various frequencies without the need for calibration. In one or more embodiments, the driver compares the pulse widths of a dimmed AC signal to the period of the AC signal to determine the desired light level. The driver may comprise a signal processor and controller in one or more embodiments.

Abstract: The invention relates to a power transmission system for transmitting electrical power from a power source to a load. The system comprises a capacitive and lossy transmission line or cable and a transformer device (10). The transformer device comprises a magnetic core and a first winding wound around a first axis of the magnetic core. The first end of the transmission line or cable is connected to the power source and the second end of the transmission line is connected to the transformer device. A second winding wound around the first axis of the magnetic core, where the second winding is connected to the load. A control winding is wound around a second axis of the magnetic core, where the first axis and the second axis are orthogonal axes to that when the first winding, the second winding and/or the control winding are energized, orthogonal fluxes are generated in the magnetic core.

Abstract: A method for compensation and symmetrization of a three-phase system with a single-phase load is provided. At least one variable inductor for connection to the three-phase system is employed in the method. The inductor's inductance is adjusted to obtain a resistive single-phase load and/or a three-phase load which draws balanced line currents. A device and a system for compensation and symmetrization by means of variable inductors is also provided.

Abstract: A controllable inductor, comprising first and second coaxial and concentric pipe elements, where said elements are connected to one another at both ends by means of magnetic end couplers, a first winding wound around both said elements, and a second winding wound around at least one of said elements, where the winding axis for the first element is perpendicular to the elements' axes and the winding axis of the second winding coincides with the elements' axes, characterized in that said first and second magnetic elements are made from anisotropic magnetic material such that the magnetic permeability in the direction of a magnetic field introduced by the first of said windings is significantly higher than the magnetic permeability in the direction of a magnetic field introduced by the second of said windings.

Abstract: The invention relates to a voltage stabilization system for power supply lines, comprising a variable inductance, an autotransformer and a system for controlling the variable inductance to automatically compensating for voltage variations of the power supply lines. The system can include a control system that includes a processor unit, a setpoint adjustment unit, a feedback unit and a rectifier circuit.

Abstract: A controllable inductor, comprising first and second coaxial and concentric pipe elements, where said elements are connected to one another at both ends by means of magnetic end couplers, a first winding wound around both said elements, and a second winding wound around at least one of said elements, where the winding axis for the first element is perpendicular to the elements' axes and the winding axis of the second winding coincides with the elements' axes, characterized in that said first and second magnetic elements are made from anisotropic magnetic material such that the magnetic permeability in the direction of a magnetic field introduced by the first of said windings is significantly higher than the magnetic permeability in the direction of a magnetic field introduced by the second of said windings.

Abstract: A controllable transformer device comprising a body of a magnetic material, a primary winding wound round the body about a first axis, a secondary winding wound round the body about a second axis at right angles to the first axis, and a control winding wound round the body about a third axis, coincident with the second axis. The device can be employed to provide a frequency controlled power supply.

Abstract: A method for compensation and symmetrization of a three-phase system with a single-phase load is provided. At least one variable inductor for connection to the three-phase system is employed in the method. The inductor's inductance is adjusted to obtain a resistive single-phase load and/or a three-phase load which draws balanced line currents. A device and a system for compensation and symmetrization by means of variable inductors is also provided.

Abstract: A controllable inductor, comprising first and second coaxial and concentric pipe elements, where said elements are connected to one another at both ends by means of magnetic end couplers, a first winding wound around both said elements, and a second winding wound around at least one of said elements, where the winding axis for the first element is perpendicular to the elements' axes and the winding axis of the second winding coincides with the elements' axes, characterized in that said first and second magnetic elements are made from anisotropic magnetic material such that the magnetic permeability in the direction of a magnetic field introduced by the first of said windings is significantly higher than the magnetic permeability in the direction of a magnetic field introduced by the second of said windings.

Abstract: A push-button actuatable electrical switch is disclosed. In one embodiment, the push-button electrical switch includes a body, a push-button lens cap extending from a first end of the body, and an electrical switch. Depression of the push-button lens cap causes the electrical switch to be activated. An electrically conductive pathway is defined through the body to a support structure whereby electrical discharges are routed to ground rather than through the lamp and electrical switch. In one embodiment, the pathway is defined by conductive carbon particles dispersed through a plastic forming parts of the switch, such as the body and the lens cap.