MUMBAI, India, May 29 -- Intellectual Property India has published a patent application (202631043317 A) filed by Narula Institute Of Technology, Kolkata, West Bengal, on April 4, for 'lighting dimmer circuit using traic and diac.'
Inventor(s) include Arkendu Mitra; Subhra Mukherjee; Kamalika Banerjee; Priyangshu Dey; Gopal Krishna Paul; and Shuvradipto Kundu.
The application for the patent was published on May 29, under issue no. 22/2026.
According to the abstract released by the Intellectual Property India: "This invention provides a high-efficiency AC lighting dimmer circuit utilizing solid-state phase-angle control. The circuit comprises a TRIAC switching element connected in series with an AC load and a DIAC-based triggering network. An adjustable RC timing network, featuring a potentiometer and capacitor, regulates the firing angle by controlling the delay before the DIAC reaches its breakover voltage to trigger the TRIAC. By modulating the point of conduction within each AC half-cycle, the circuit "chops" the input waveform to vary the root-mean-square (RMS) voltage supplied to the load. This design eliminates the significant energy waste and heat generation associated with traditional resistive dimming methods, providing a compact, cost-effective, and reliable solution for domestic and commercial power regulation applications."
Disclaimer: Curated by HT Syndication.
