ALEXANDRIA, Va., April 21 -- United States Patent no. 12,609,647, issued on April 21, was assigned to JIANGSU DONGCHENG TOOLS TECHNOLOGY Co. LTD. (Nantong, China).
"Motor control circuit and control method" was invented by Haodong Wang (Nantong, China) and Jianan Huang (Nantong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a motor control circuit and a control method. The control circuit includes: a power supply; a drive circuit; a pulse width modulation (PWM) signal generation circuit; a controller; and a reverse electromotive force detection circuit. The power supply is connected to the motor through the drive circuit; the drive circuit is connected to the controller through the PWM s...