Household LED lamps
Date:2011-05-26 13:53
Status:Be resolved
Question:admin
andard general purpose incandescent bulb emits light at an efficiency of about 14 to 17 lumens/W depending on its size and voltage. According to the European Union standard, an energy-efficient bulb that claims to be the equivalent of a 60W tungsten bulb must have a minimum light output of 806 lumens.[5])
Most LED bulbs are not designed to be dimmed (although some models are designed to work with dimmers), and are usually directional. The lamps have declined in cost to between US$30 to $50 each
Best answer:
No best answer
[All answers(0)]
[Let me answer]
3/14 Next Pre Home page Last page
Back
Refresh
WAP Home
Web version
Login
06/25 16:38