ALEXANDRIA, Va., July 14 -- United States Patent no. 12,683,506, issued on July 14, was assigned to MIPTECH Ltd. (China).

"Switching power supply and zero voltage switching control method thereof" was invented by Jun Shen (Central Hong Kong, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A switching power supply control method includes the following: when a switching time interval of the second switching transistor being less than or equal to a first preset value after the high-voltage startup of the switching power supply, the secondary control module acquires a voltage waveform at a second connection point between the secondary winding and the second switching transistor; when the voltage waveform at...