US Patent Issued to Joulwatt Technology on Nov. 25 for "Lighting circuit and control method thereof" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,484,121, issued on Nov. 25, was assigned to Joulwatt Technology Co. Ltd. (Hangzhou, China).

"Lighting circuit and control method thereof" was invented by Wanyue He (Hangzhou, China) and Guoqiang Liu (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lighting circuit and a control method thereof are provided. The lighting circuit includes a triac dimmer connected between an alternating current (AC) input power supply and a rectifier circuit, where the rectifier circuit is configured to output a bus voltage after phase cutting, and further includes a turn-on angle detection circuit configured to detect a turn-on state of the triac dimmer an...