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80% energy efficiency requirements, and asked for short-circuit and overvoltage protection and other protective features. in such applications, can be used from on semiconductor's ncp1015 chip switching power supply conol ic. this device integrates a fixed frequency (65/100/130 khz) current-mode conoller and 700 v high voltage mosfet, providing song building low-cost power supply all the necessary features, such as soft start, frequency jittering, short-circuit protection, skip-cycle, the maximum peak current setpoint and function of dynamic self-powered (no auxiliary winding) and so on. it is worth mentioning that, ncp1015 in the 1 w to 8 w led lighting applications, both can be used to isolated programs, can also be used for non-isolated solutions to meet different customer application needs. these two programs cost about the same. led writing board (http://www.flashingboards.com/)
this is because the explosives tnt molecules with a similar interaction between the polymer chains produced a new way to stop the laser work. another of the study, professor of physics at the university of st andrews, said ivor samuel, the use of the mechanism can be developed into any type of explosive device sensors (including roadside bombs) technology. samuel believes that this achievement is very important, because polymer lasers made of plastic, which makes the application of low concenations of explosives detection equipment, inexpensive molecular possible. scientists believe that such lasers can be used in remote conol car, people need not be in their lives at risk to be able to "sniff" to the volatile explosives, the "atmosphere & rdquo the system can also be used for airport security, baggage and can detect hidden explosives may material.led neon sign (http://www.flashingboards.com/)
white balance technology, nonlinear correction techniques, high gray technology, color uniformity technology, video processing technology, fast moving image compensation, full brake conol technology. 1.3 design and installation of quality assurance are generally used for sports stadium displays, large-scale activities, failures and mistakes at any point will cause a great impact, and thus a stable quality of the project is the user's objective requirements. in order to meet the requirement, to ensure that display stable and reliable operation, foolproof, it is necessary in the design, production, installation, commissioning and delivery of the quality of the pilot, with effective quality assurance system to ensure that the entire production process. 2, space needs analysis on the led display led eleconic display of the design, manufacture, installation, commissioning and operation of the site must be flat with the stadium, profile matching, and coordinate the overall effect.led signs (http://www.flashingboards.com/)