In conventional lighting, typically a light has a switch that places the light on or off, through which no current will flow in the off position.
"Solid-state lighting is not as cut and dry," says Scott Riesebosch, president of Canada-based CRS Electronics (), an LED light engine designer and manufacturer. In electronic systems that have quick start-up facilities Or remote controls, much like old non-ENERGY STAR compliant computer monitors and TVs, the electricity is still flowing.
"LED is a hybrid of lighting and electronics technology, and as the result you are incorporating the positives as well as the potential negatives of each technology," says Riesebosch. "If designed properly, energy is minimized to an acceptable level and the LEDs and The micro-processor are essentially put to sleep."
" "The left is unrestricted to listen to your stereo," added Riesebosch.
Proper design of LED luminaires allows for more efficient operation. If the constant use of minimal power is not for a specific purpose, such as intelligent systems, including addressing modules, dimming or occupancy sensing, it is the result of poor design.
LED drivers have an inhibit (shutdown) input, typically putting the driver to sleep. Drivers designed with discrete components rather an integrated solution with an inhibit or shutdown input that puts the entire driver to sleep, are typically less efficient. And harder to produce. The rationale may be a reduced production cost. Buyers beware if your motivation to employ LED technology is energy reduction.
At the recent DoE-sponsored SSL Market Introduction Workshop, Voices for SSL Efficiency held in Boston on July 16th and 17th, Jeff McCullough, Senior Research Engineer at the DoE's Pacific Northwest National Laboratory (PNNL) (), reviewed the Results of the commercial product testing program and presented the Final Draft of the new proposed ENERGY STAR criteria for SSL.
With respect to offline or standby power, proposed ENERGY STAR compliance will prohibit offline or standby draw, with the exception of intelligent systems and then only to a maximum of 0.5 watts in standby mode, said McCullough.
The primary issue found with the products tested was the use of in-line power supplies and placing the switch on the load side versus the line side, he added. Simply making this change would solve the problem in the products tested.
Ilisebosch cautions luminaire developers to not overlook the efficiency of the driver. Part of the appeal of LED lighting is the overall system energy reduction. If you employ efficient LEDs, efficient optical design, but an inefficient driver, you have negated one of the most important driver Advantages of LED. About the Author Brian Owen is the President of FIRSTeam Corporation and the Principal of LEDesignWorks. He is also the Program Advisor to greenTbiz , which facilitates the LED City Toronto initiative. He is actively involved in the development and operation of energy conservation Programs for government, municipalities and utilities and specializes in capacity building, commercialization and market transformation. greenTbiz provides energy conservation and environmental awareness programs to the small business sector in Toronto, Canada. Brian can be contacted by email at ( or ).
Tobacco control has been a common global concern, while the traditional tobacco industry gradually, new tobacco has become the new strategic layout of tobacco giants. In this context, the emergence of e-cigarettes has further led to the replacement of traditional tobacco. At present, there are already a thousand different types of e-cigarettes, which have undergone several stages of development. The e-cigarette we are introducing today is the CBD pod systewm, a new type of e-cigarette. In this article we will combine the characteristics of the CBD with a brief analysis of it.
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