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ic current source led light source can make. therefore, the dc drive system applications led light source must be: switching power supply + constant current source. led light fixtures must have a certain space to accommodate the power supply module, but for the standard e27 edison screw lamps is very limited space, it is difficult placement. whether through the step-down switching power supply, or other methods, the system will have a certain amount of wear and tear, dc led lamps in the exchanges between dc conversion of about 8 to 25% of the elecicity is loss of efficiency of the system difficult to achieve over 90%. thereby increasing the power conversion efficiency has been the chip and power supply manufacturers to pursue. common led light source driver ic current common led light source driver ic are borrowed from the universal power supply ic, the real driver for the led light source designed ic, little, many companies are in the design, estimated that by 2010 there may be many city can be. los angeles neon signs (http://www.flashingboards.com/)
the production of oled devices in color, containing doping agents to form thin films of organic materials, materials and doping agent to take co-evaporation process maix material, the general conol of dopant materials in the 0.5 to 2% (total number of moles of subsate materials ), requires the conol of maix material and evaporation at the same time, sict conol of dopant content in the maix material. schematic diagram of organic material deposited organic material evaporation faq a) the effective use of materials, the effective rate currently available is very limited choice of vendors, the designed system to be efficient use of exemely expensive organic materials and dopants; the current utilization generally less than 10% or less, full-color lower utilization of the production process.neon signs wholesale (http://www.flashingboards.com/)
clearline, citysoul other road lighting has become a pedesian and the driver of the security barrier. improve the quality of the philips intelligent occuplus office multifunction dimming conol system, set the human body sensors, daylight sensors, automatic dimming function as one. for commercial lighting combines philips ot led lighting lamps and downlights feature a small projection, lighting for the store for easy dressing. philips is also on display at the exhibition for the hotel lighting led lights cup hyun, its design .business signs (http://www.flashingboards.com/)