ALEXANDRIA, Va., July 15 -- United States Patent no. 12,664,864, issued on June 23.
"LED downlight power supply circuit and LED downlight" was invented by Chih-Pin Hsu (Dongguan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are an LED downlight power supply circuit and an LED downlight, the power supply circuit includes an LED drive control module, a constant voltage output module, a battery boost module, a battery, a microcontroller unit, and an alarm unit. The microcontroller unit is configured to control operating and standby states of an LED drive control circuit and the battery boost module according to an operating state of the constant voltage output module; the microcontroller unit ...