US Patent Issued to Alpha Networks on Nov. 25 for "Circuit system for regulating DC fan rotation speed digitally" (Taiwanese Inventor)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,483,164, issued on Nov. 25, was assigned to Alpha Networks Inc. (Hsinchu, Taiwan).

"Circuit system for regulating DC fan rotation speed digitally" was invented by Pengfei Song (Hsinchu, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A circuit system for digitally regulating direct-current fan rotation speed includes a parallel data generator circuit, a trapezoidal resistor network circuit, a current amplifier circuit, a linear voltage-controlled resistor circuit, and a fan power converter circuit. The parallel data generator circuit can receive control data and generate corresponding digital parallel data. The trapezoidal resistor network circuit...