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:
Apr. 24, 2012
Filed:
Apr. 25, 2008
Richard H. Harrington, Dexter, MI (US);
Charles W. Krapf, Livonia, MI (US);
Richard H. Harrington, Dexter, MI (US);
Charles W. Krapf, Livonia, MI (US);
Other;
Abstract
Improved electric circuits that minimize, or eliminate, energy losses in the supply of energy to and control of LEDs. Addition of diodes and a capacitor to a circuit reduces or eliminates LED blinking, creates smooth and continuous infinitely variable dimming. The components are added to supply power to each LED during the half of the AC cycle where it would normally be turned off. A first added diode allows an added capacitor to charge during the half cycle that the original diode is turned on, but does not allow the other half cycle to discharge the added capacitor. When the added capacitor is charged enough to turn on the original diode, it stays on throughout the AC cycle. The same relationship exists between the second added diode, the added capacitor and the second original diode. Zener diodes protect the LEDs from voltage surge's/spikes by shunting current around LEDs when the voltage exceeds the Zener diode's breakdown voltage. Micro processor controller with MOS FETs is ultra efficient and has next to zero power dissipation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile