Abstract: A new method for the construction of adjustable AC and DC power supplies is proposed based on adjusting the RMS value of the utility voltage by providing the non-conducting periods centered at the time where the sinusoidal voltage is maximum. This technique minimizes the peaks of the voltage that are normally applied to the loads by the prior arts. Among others, the benefits are smoother control and torque of motor loads, and simpler construction of transformerless power supplies.

Abstract: An optimum regulation method is disclosed for reconfigurable LED arrays used for general illumination applications. This document describes a reconfigurable LED array formed by connecting in series LED lamps and LED pairs capable of being reconfigured in either series or parallel. The performance deficiencies of previous solutions are solved by changing the knee voltage of the array through the reconfiguration of LED pairs. The simplicity of the concept can make practical the implementation of driverless LED lighting fixtures.

Abstract: An optimum LED lighting fixture and regulation method are disclosed for reconfigurable LED arrays used for general illumination applications in AC utility power systems. The method describes a double reconfiguration scheme of a plurality of LED arrays connected in parallel, and where each array comprises some LED pairs formed with two branches of LED lamps capable of changing their interconnection. The first reconfiguration comprises changing the interconnection of the LED pairs to either parallel or series, and the second, comprises changing the number of active LED arrays within the plurality. The method comprises changing the number of active LED arrays as a way of having the magnitude of the current through said plurality to follow the magnitude of the applied voltage. The performance deficiencies of the prior arts are overcome by proposing and LED lighting fixture with higher energy efficiencies, higher power ratings, and lower harmonics generation.

Abstract: A non-inflatable resting device used for heating and cooling is provided with a plurality of interconnected channels located close to an external surface of the resting device. Each channel substantially occupies the space between two support beams and the interior of said external surface. The comfort level of the resting devices is considerably increased while maintaining adequate structural integrity of the channels when the support beams are constructed with a cushion material having layers of different hardness levels. The top layer is a cushion material with high initial softness ratio. The arrangement of the channels and beams allows a non-pressurized conditioned fluid to flow underneath of the external surface providing a resting device with a heating and cooling system with unmatched energy efficiency. The high energy efficiency of the proposed resting device is due to the elimination of the compressor motor and the thick cushion layer used on the top surface as required by the competition.

Abstract: An optimum LED lighting fixture and regulation method are disclosed for reconfigurable LED arrays used for general illumination applications in AC utility power systems. The method describes a double reconfiguration scheme of a plurality of LED arrays connected in parallel, and where each array comprises some LED pairs formed with two branches of LED lamps capable of changing their interconnection. The first reconfiguration comprises changing the interconnection of the LED pairs to either parallel or series, and the second, comprises changing the number of active LED arrays within the plurality. The method comprises changing the number of active LED arrays as a way of having the magnitude of the current through said plurality to follow the magnitude of the applied voltage. The performance deficiencies of the prior arts are overcome by proposing and LED lighting fixture with higher energy efficiencies, higher power ratings, and lower harmonics generation.

Abstract: An optimum regulation method is disclosed for reconfigurable LED arrays used for general illumination applications. This document describes a reconfigurable LED array formed by connecting in series LED lamps and LED pairs capable of being reconfigured in either series or parallel. The performance deficiencies of previous solutions are solved by changing the voltage rating of the array through the reconfiguration of LED pairs. The simplicity of the concept can make practical the implementation of driverless LED lighting fixtures.

Abstract: An inflatable device has non-pressurized ducts and channels formed within the body of the inflatable device when inflated, wherein the inflation pressure of the inflatable device is maintained when the interior of the ducts and channels are exposed to atmospheric pressures allowing fluid to flow through the ducts and channels at substantially lower pressure levels than the inflation pressure of the inflatable device, a plurality of non-pressurized channels and pressurized support columns can be located in substantial proximity to the surface of the inflatable device in contact with the object to be heated or cooled.

Abstract: An inflatable device has non-pressurized ducts and channels formed within the body of the inflatable device when inflated, wherein the inflation pressure of the inflatable device is maintained when the interior of the ducts and channels are exposed to atmospheric pressures allowing fluid to flow through the ducts and channels at substantially lower pressure levels than the inflation pressure of the inflatable device. When used for heating or cooling, a plurality of non-pressurized channels and pressurized support columns can be located in substantial proximity to the surface of the inflatable device in contact with the object to be heated or cooled.

Abstract: A non-inflatable resting device used for heating and cooling is provided with a plurality of interconnected channels located close to an external surface of the resting device. Each channel substantially occupies the space between two support beams and the interior of said external surface. The comfort level of the resting devices is considerably increased while maintaining adequate structural integrity of the channels when the support beams are constructed with a cushion material having layers of different hardness levels. The top layer is a cushion material with high initial softness ratio. The arrangement of the channels and beams allows a non-pressurized conditioned fluid to flow underneath of the external surface providing a resting device with a heating and cooling system with unmatched energy efficiency. The high energy efficiency of the proposed resting device is due to the elimination of the compressor motor and the thick cushion layer used on the top surface as required by the competition.

Abstract: An inflatable device has non-pressurized ducts and channels formed within the body of the inflatable device when inflated, wherein the inflation pressure of the inflatable device is maintained when the interior of the ducts and channels are exposed to atmospheric pressures allowing fluid to flow through the ducts and channels at substantially lower pressure levels than the inflation pressure of the inflatable device. When used for heating or cooling, a plurality of non-pressurized channels and pressurized support columns can be located in substantial proximity to the surface of the inflatable device in contact with the object to be heated or cooled.

Abstract: An inflatable device has non-pressurized ducts and channels formed within the body of the inflatable device when inflated, wherein the inflation pressure of the inflatable device is maintained when the interior of the ducts and channels are exposed to atmospheric pressures allowing fluid to flow through the ducts and channels at substantially lower pressure levels than the inflation pressure of the inflatable device. When used for heating or cooling, a plurality of non-pressurized channels and pressurized support columns can be located in substantial proximity to the surface of the inflatable device in contact with the object to be heated or cooled.