In the late 1980s, the ring inductor ballast was applied to compact energy-saving fluorescent lamps in the United States, and Midwest Toriod began mass production in 1988. China began production in the early 1990s. Ballast resistor is a device for limiting current and generating instantaneous high v... read more
Compared with ordinary light bulbs, xenon bulbs have two significant advantages: on the one hand, xenon bulbs have three times more light intensity than ordinary halogen bulbs, but consume only two-thirds of the energy; on the other hand, xenon bulbs use The sun's nearly identical light color create... read more
The high-pressure sodium lamp emits golden white light when used, and has the advantages of high luminous efficiency, low power consumption, long life, strong fog-passing ability and no attracting insects. Widely used in roads, highways, airports, terminals, docks, stations, squares, street intersec... read more