Patent · US Active

Secondary-side alternating energy transfer control with inverted reference and LED-derived power supply

US9173261B2 · kind B2 · utility

2Cited by

34References

21Claims

0Family size

Inventors

Wesley L. Mokry · Austin, US
John L. Melanson · Austin, US

Key dates

Filing date	Jun 30, 2011
Grant date	Oct 27, 2015
Priority date	—
Expiry date	Apr 27, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/30
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A single magnetic storage element is used to provide power to multiple lighting devices, which may be strings of light-emitting diodes (LEDs) of different color. A switching circuit controls alternating application of energy among the multiple lighting devices and another switching circuit may charge the primary winding to different energy levels to control the intensity of the multiple lighting devices. In particular, the multiple lighting devices may be controlled to provide a desired color profile while dimming the lighting devices, while requiring only a single magnetic storage element for supplying energy to the lighting devices.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.