htw097d6t
Dołączył: 23 Mar 2011
Posty: 18
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Skąd: England
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 Wysłany: Pią 2:33, 25 Mar 2011 Temat postu: Remember the key to your success is the board and |
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Led its thermal equilibrium conditions and working conditions of such led lighting into the final state is still not good in therelationship, so the measured optical parameters and the practical application of the future the parameters of the state still has a reference of available. has been issued gb/t24824-2009/cie 127-2007neq "led modules for general lighting basic performance measurement method" standard in this regard is this provision: "the test or measurement, led module should work in thermal equilibrium ,writing board in monitoring temperature at the same time, it is best to monitor the working temperature of led module itself in order to ensure reproducibility of tests can be.
testing requirements in figure 2 connection. led neon sign figure 2 start the test circuit and test the connection process, follow these steps: click a sign of led control unit connected to the smallest led load. to control the output voltage control devices, thereare multiple parallel load, leaving only a minimal load.
test line in figure 3, for a stable output voltage control device, when the input voltage rating of 92% to 106% range changes, the output voltage change compared to the rated voltage of led modules, the deviation should be less than lusm10 %, for anon-stable output voltage control device, at rated input voltage, led signs output voltage should be in line with the led modules are rated voltage lusm10% range. 2.2 led control output current control device controls the output current of the led control device.
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