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:
Aug. 26, 2014
Filed:
May. 31, 2012
Ronald J. Lenk, Woodstock, GA (US);
Ronald J. Lenk, Woodstock, GA (US);
Switch Bulb Company, Inc., San Jose, CA (US);
Abstract
A lighting circuit for a light emitting diode (LED) bulb capable of operating at different light output levels depending on received AC power includes a first group of LEDs and second group of LEDs, each of which is configured to emit light as a group. The lighting circuit also includes an AC/DC converter electrically connected to the first and second groups of LEDs. A detector circuit detects received AC power. A selection circuit is operable to cause the AC/DC converter circuit to provide current into one configuration of LEDs from the group of configurations of LEDs consisting of: the first group of LEDs only, the second group of LEDs only, and the first and second group of LEDs. The configuration of LEDs to provide current to is selected based on received AC power.