ALEXANDRIA, Va., April 15 -- United States Patent no. 12,604,385, issued on April 14.
"High-efficiency, energy-saving, safe dual-color LED control circuit" was invented by Hang Liu (Jingzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A high-efficiency, energy-saving, safe dual-color LED control circuit includes a power supply, a controller, and several parallel LEDs. The controller internally features a program control circuit, memory circuit, infrared remote control receiving circuit, low-power power supply circuit, H-bridge drive circuit, and short-circuit protection circuit. The design of the low-power power supply circuit employs diodes D1 and D2 to prevent reverse connections and uses a zener...