Cassette light, powering unit therefore, multi-dynamic smart magnetic structure and method

摘要

A cassette light retrofit adapted to be received in a housing portion of an existing lighting fixture from which the light tubes and door frame with diffuser have been removed comprises an open cassette enclosure having a door frame and diffuser closing the enclosure; a lightable tubing array in the cassette enclosure; a power converter in the enclosure connected to energize the lightable array; and, said cassette door frame being attachable to the fixture housing portion to replace said fixture door frame with the cassette enclosure being in said housing. The power converter uses 8 windings with isolation to improve the tracking efficiency of the sensing windings for accurate high frequency power application for the load. Also, an A.C. winding permits dimming of the lamp load by filling in chunks of voltage deleted by the dimmer.