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HKU develops passive LED power supply with long life and saves maintenance costs.
- Aug 23, 2018 -

There are more than one hundred and forty thousand traditional high voltage sodium lamps in Hongkong, but they are more energy consuming and environmentally less. The "passive LED power supply", developed by the University of Hong Kong and patented by Hong Kong businessmen, saves nearly 70% of the energy compared with the traditional high-pressure sodium lamp, and has an estimated service life of up to 15 years, five years longer than the traditional LED street lamp. The technical director acknowledged that the technology cost of "passive LED power supply" is higher than that of "active power supply" used in traditional LED street lamps, but it can save maintenance costs for users in the long run and recycle materials relatively easily.

It is reported that the "passive LED power supply" developed by the University of Hong Kong and patented by the Federal Group Global Limited can overcome the difficulty of operating in high temperature environment and can last at least 60,000 hours. The lifetime of the lamp can be up to 15 years in terms of 4,000 hours per year.

Wang Hanbang, CEO of Federal Group Global Limited, explained that the "passive LED power supply" technology is not affected by the temperature of the "electrolytic capacitor" coupled with the power supply can withstand the strong radiation electromagnetic interference caused by lightning, so that the failure rate can be significantly reduced, thereby reducing maintenance costs.

However, Mr. Wang acknowledged that the cost of "passive LED power supply" was about 1,200 yuan, which was much higher than that of "active LED power supply", but cited a pilot project in Heshan City, Jiangmen, which indicated that more than 300 street lamps driven by "passive LED power supply" technology had not been damaged for nearly four years, reflecting savings. Maintenance cost.

According to reports, the new LED lamp won a special award and a special gold medal at the Geneva International Invention Fair. At present, 13 new LED lamps have been tested in Shi'ao, Hong Kong and Sha'tian.

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