The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 2010
Filed:
Feb. 23, 2007
William Bryce Fricke, Emmaus, PA (US);
Aaron Dobbins, Macungie, PA (US);
James P. Steiner, Royersford, PA (US);
Chen Ming Wu, Emmaus, PA (US);
Russell Weightman, Abington, PA (US);
David J. Perreault, Brookline, MA (US);
Ryan Lane, Allentown, PA (US);
Joseph William Sapp, Emmaus, PA (US);
Kyle A. Mccarter, Bethlehem, PA (US);
William Bryce Fricke, Emmaus, PA (US);
Aaron Dobbins, Macungie, PA (US);
James P. Steiner, Royersford, PA (US);
Chen Ming Wu, Emmaus, PA (US);
Russell Weightman, Abington, PA (US);
David J. Perreault, Brookline, MA (US);
Ryan Lane, Allentown, PA (US);
Joseph William Sapp, Emmaus, PA (US);
Kyle A. McCarter, Bethlehem, PA (US);
Lutron Electronics Co., Inc., Coopersburg, PA (US);
Abstract
A load control device is adapted to be disposed in series with an AC voltage source and an electrical load and is operable to provide substantially all voltage provided by the AC voltage source to the load. The load control device comprises a controllably conductive device, a controller, a zero-crossing detector, and a power supply for generating a substantially DC voltage for powering the controller. The power supply is operable to charge an energy storage device to a predetermined amount of energy each half-cycle. The controller is operable to determine when the power supply has stopped charging from the zero-crossing detector each half-cycle, and to immediately render the controllably conductive device conductive to conduct the full load current. Before the controllably conductive device begins to conduct each half-cycle, only a minimal voltage develops across the power supply to allow the energy storage device to charge.