Intellectual Property India Publishes Patent Application for A Circuit For Detecting And Distinguishing Between Ac And Dc Power Supplies

MUMBAI, India, Sept. 28 -- Intellectual Property India has published a patent application (202511022745 A) filed by Fev Group Gmbh on March 13, 2025, for A Circuit For Detecting And Distinguishing Between Ac And Dc Power Supplies.

Inventors include Gavali, Nand; Sukhatme, Yash; and Jariwala, Rushabh.

The application for the patent was published on September 25, 2026, under issue no. 39/2026.

Abstract: A circuit for detecting and distinguishing between AC and DC power supplies on an SAE J3400 charging coupler (101) for an electric vehicle, comprising: a filtering unit configured to filter a Control Pilot (CP) (115) line signal; a voltage measurement unit configured to determine an average voltage of the filtered CP (115) line signal; and a comparator configured to compare the average voltage with predetermined threshold values to detect a duty cycle of the signal on the said CP (115) line; wherein, the said circuit for detection and distinguishing generates an "AC contactor enable (106)" signal if the duty cycle corresponds to AC power and a "DC contactor enable (108)" signal if the duty cycle corresponds to DC power. Ref. Fig. 1.

Disclaimer: Curated by HT Syndication.