zip737l5u Forum Legend
Joined: 07 Apr 2011 Posts: 636 Location: England
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Posted: Sat Mar 24, 2012 1:25 am Post subject: LED's industry of backstage supporter of several. |
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led lamp is not currently on the market with a heat sink, this can not do high-power lamps and high-quality and long life. the correct heat sink design should be taken into account, industrial production is the led lamp heat sink, squeeze out the semi-circular molds with aluminum fins, and then cut out under the power of the size of the desired length, then the system out aluminum foil lines on the chip fixed on the copper foil, playing with the help of gold wire connection or statutory bonding. this lamp cooling effect, only two thermal resistance, less than the commonly used packaging method one to two thermal resistance, reduce the temperature of the chip, to improve the quality and longevity of led fluorescent lamps can play a role.display board
brightness simple way. using the appropriate driver ic, can be through a pwm signal, dc voltage or an external nmos transistors to perform dimming, dimming range up to 3000:1.finally, the automotive electronic products may be sensitive to noise, especially the navigation system, radio circuits, and am radio frequency receiver. to minimize the possibility of occurrence of noise, linear technology, in its led driver ic, using a constant frequency switching topology. in addition, users can also 200khz to 2mhz switching frequency range, so that switching noise away from the critical frequency bands (such as: am radio band). high switching frequency also allows the use of small inductors and ceramic capacitors, the solution minimizes the size and cost.led sign
so the promotion of led lamps resulted in some negative effects; and led technology is to overcome the surface these shortcomings, the right will lead the development of led lighting. clp thirteen led flat light source technology research and development used to create the flat light source led street lamps, tunnel lamps, mining lamps.floodlights and so on several series of led products have received good market results. therefore, ohno saving addition to the clp will be combined outside of thirteen, will invest 20 million yuan to establish production base of led flat light source, formally enter this field.led lamp production line if the selected sabic innovative plastics ultra high-performance lexandmx polycarbonate (pc) copolymer resins, can create a special kind of lighting products, it is designed specifically for niche markets a; and traffic lighting manufacturers norka is the first time lexandmx polycarbonate. menu board |
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