US Patent Issued to HDM SYSTEMS on April 7 for "Input transient protection and reverse protection for inverters" (Massachusetts Inventors)

ALEXANDRIA, Va., April 7 -- United States Patent no. 12,597,853, issued on April 7, was assigned to HDM SYSTEMS Corp. (Brighton, Mass.).

"Input transient protection and reverse protection for inverters" was invented by James Jin Xiong Zeng (Westwood, Mass.), Raymond W. Lei (Braintree, Mass.) and David S. C. Liu (Newton, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A voltage transient protection utilizes Zener diodes, resisters, and a power MOSFET to clamp down the DC spike or surged voltage at the input and prevent damage to the inverter's DC power and control section. The input reverse polarity protection utilizes blocking diodes and a switch to cut off reverse voltage and prevent damage to the DC p...