HKU develops passive LED Power Supplies, which saves maintenance costs

There are over 140,000 traditional high-pressure nano lamps in Hong Kong, but they are more energy-intensive and environmentally friendly. The "Passive LED Power" floodlights, which are researched and developed by the University of Hong Kong and patented by Hong Kong businessmen, save nearly 70% of energy compared to traditional high-pressure sodium lamps, and the service life is estimated to be 15 years longer than the traditional LED street lamps. 5 years old. The technical person in charge acknowledges that the "passive LED power" technology cost is higher than the traditional "active power supply" used in LED street lights. However, in the long run, the user can save maintenance costs and the materials are relatively easy to recycle.

It is reported that the "passive LED power supply" patented by the University of Hong Kong and patented by Federal Group Global Limited can overcome the dilemma of operating in high temperature environment, and can use at least 60,000 hours; using 4,000 hours per year, variable phase life It can be as long as 15 years.

Wang Hanbang, chief executive of Federal Group Global Limited, explained that the "passive LED power" technology is not affected by the temperature of the "electrolytic capacitor", and the power supply can withstand the strong radiated electromagnetic interference generated by lightning, so the failure rate can be greatly reduced, thus Reduce maintenance costs.

However, Wang Hanbang admits that the cost of "passive LED Power Supplies" is about 1,200 yuan, which is much higher than the cost of "active LED power supply" of about 400 yuan. However, he quoted a trial plan in Heshan City, Jiangmen, referring to more than 300. The use of "passive LED power" technology to drive street lamps has not been damaged for nearly four years, reflecting the maintenance cost.

According to reports, this new LED lamp won a special award and a special gold medal at the Geneva International Invention Exhibition. A total of 13 lamps are currently being tested in Shijiazhuang and Shatian, Hong Kong.