Abstract: A system for controlling a load including a plurality of LEDs includes a timing circuit, an encoder and a configuration switching circuit. The timing circuit generates time-off switching points and time-on switching points. The encoder generates a load voltage by modifying a rectified line voltage using the time-off switching points and the time-on switching points. The configuration switching circuit determines a maximum voltage of a line voltage input to the driver system, selects a configuration for the plurality of LEDs based on the maximum voltage, communicates the configuration for the plurality of LEDs to the load, dynamically reconfigures the configuration for the plurality of LEDs based on the modified rectified line voltage, the dynamically reconfiguration of the configuration including changing at least one of the first quantity of LEDs in electrically coupled in series and the second quantity of LEDs electrically coupled in parallel.

Abstract: A system for controlling a load including a plurality of LEDs includes a timing circuit, an encoder and a configuration switching circuit. The timing circuit generates time-off switching points and time-on switching points. The encoder generates a load voltage by modifying a rectified line voltage using the time-off switching points and the time-on switching points. The configuration switching circuit determines a maximum voltage of a line voltage input to the driver system, selects a configuration for the plurality of LEDs based on the maximum voltage, communicates the configuration for the plurality of LEDs to the load, dynamically reconfigures the configuration for the plurality of LEDs based on the modified rectified line voltage, the dynamically reconfiguration of the configuration including changing at least one of the first quantity of LEDs in electrically coupled in series and the second quantity of LEDs electrically coupled in parallel.

Abstract: An apparatus and method for fabricating a three dimensional model from a composite model formed or a plurality of successive layers of model material and sacrificial mold material. Each successive layer is constructed by depositing, drop-by-drop, at least one line of sacrifical mold material delineating at least one boundary of the model material within the layer and thereafter depositing the model material onto all delineated regions of the layer by spray deposition. Each successive layer is completed by a planing process which removes the undesired thickness of both the sacrificial and the model materials. Following completion of the composite model, the sacrificial mold material is removable from the composite model, by a process effecting only the sacrificial mold material, to produce the three dimensional model. A device, for depositing the model material at the rate faster than the rate that the mold material is deposited, is also described.

Abstract: An apparatus and method for fabricating a three dimensional model from a composite model formed or a plurality of successive layers of model material and sacrificial mold material. Each successive layer is constructed by depositing, drop-by-drop, at least one line of sacrificial mold material delineating at least one boundary of the model material within the layer and thereafter depositing the model material onto all delineated regions of the layer by spray deposition. Each successive layer is completed by a planing process which removes the undesired thickness of both the sacrificial and the model materials. Following completion of the composite model, the sacrificial mold material is removable from the composite model, by a process effecting only the sacrificial mold material, to produce the three dimensional model. A device, for depositing the model material at the rate faster than the rate that the mold material is deposited, is also described.

Abstract: An apparatus and method for fabricating a three dimensional model from a composite model formed or a plurality of successive layers of model material and sacrificial mold material. Each successive layer is constructed by depositing, drop-by-drop, at least one line of sacrifical mold material delineating at least one boundary of the model material within the layer and thereafter depositing the model material onto all delineated regions of the layer by spray deposition. Each successive layer is completed by a planing process which removes the undesired thickness of both the sacrificial and the model materials. Following completion of the composite model, the sacrificial mold material is removable from the composite model, by a process effecting only the sacrificial mold material, to produce the three dimensional model. A device, for depositing the model material at the rate faster than the rate that the mold material is deposited, is also described.

Abstract: An apparatus and method for fabricating a three dimensional model from a composite model formed or a plurality of successive layers of model material and sacrificial mold material. Each successive layer is constructed by depositing, drop-by-drop, at least one line of sacrifical mold material delineating at least one boundary of the model material within the layer and thereafter depositing the model material onto all delineated regions of the layer by spray deposition. Each successive layer is completed by a planing process which removes the undesired thickness of both the sacrificial and the model materials. Following completion of the composite model, the sacrificial mold material is removable from the composite model, by a process effecting only the sacrificial mold material, to produce the three dimensional model. A device, for depositing the model material at the rate faster than the rate that the mold material is deposited, is also described.