Haihong Science and Technology launched the low he

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Led led modules as possible to monitor the junction voltage, should be the preferred monitoring junction voltage. otherwise, theled module should be designated to monitor the temperature of the temperature measurement point. " results can be seen in monitoring the conditions of voltage down the optical parameters measured writing board module is to ensure reproducible detection of the preferred solution, but the standard did not specify the actual use of the junction temperature in the simulation test led module under the conditions of light, color, electrical parameters.(3) packaging is the product of the last session before leaving the factory, packaging technology have a direct impact products to the hands of users is for qualified products. packagingshould be anti-static shielding bags, led neon sign it is used the device packaging, transport and storage, has a moisture-proof effect.the end of the forward voltage will be increased linearly, so the output voltage stable led control devices applies only to their own devices with a limited flow of led modules (at leastone current limiting resistor), or for larger power led lighting is not work. figure 3 control the output voltage of the led signs controller test circuit led control device if you do not have a stable output voltage, that is, when the load changes in the nominal range or power supply voltage rating lusm10% in the range of changes, the output voltage will a range of significant change.