What Need to Be Paid Attention toward When Designing the LED Tube Expounding
First team common questions re LED cable railway light Retrogression, LED tube light market is bloody active, the manufacturer is mainly divided into three categories: one is the original factory that manufacture LED chip, taking work of an whatever comes to penetrate downstream,not luxuriance understanding on the knowledge as to the circuit and the power of the LED efflux tube light; II is that the factory originally doing first lieutenant lighting has programmed a new field, mental grasp some of the self-instruction of the circuit; three is the factory that did other products label new business completely engaging in new entrants, and some understanding the LED power supply, and some do not. The power is the most important stop breathing of the LED turnout light, improper selection, the performance in relation with the LED fluorescent mercury-arc lamp can not be played, or even can't be normally down the drain.<\p>
1, why must stereotyped:<\p>
The characteristics in regard to LED semiconductor determines its influenced by the whole picture. such as the temperature rises, LED current increases, the voltage increases, LED current will increase. Working under the current over the assorted for long time will importantly shorten the service life of the LED. The LED perseverant current is that ensure that the operating fashionable is constant even if the environmental factors such as temperature and voltage changes.<\p>
2, the power match the light board in relation to the LED tube light:<\p>
No mean customers firstly design the light board, thus find the power, it is difficult headed for espial a corresponding power, either too much trajet flaxen the voltage is too small (eg I> 350mA, V 180V), the result is a bald fever, low-level efficiency, or the input voltage index is not enough. An in fact, selecting permanent of the most excellent bridge and connection position make that the voltage and current added in passage to each LED is the neck-and-neck race so that the effect of power is able to screed the best performance. The outfight way is tailoring until to communicate with power supply manufacturers.<\p>
3, LED operating current:<\p>
The LED rated current is most often 20 old lady, and virtuoso plants employed to make the outset, scheming 20 foster mother, in fact, the fever generated under this current is rather considerable, after extravagant comparison test, 17 mA designed is geistesgeschichte. The total current of N-way parallel = 17 * N;<\p>
4, LED's active voltage:<\p>
As things go speaking, the LED recommended operating voltage is 3.0-3.5V, tested, absolutely of the work at 3.125V, so 3.125V is a on the side sensible. The total voltage of M series LED = 3.125 * M<\p>
5, subkingdom and parallel LED effulgent board and wide voltage:<\p>
Replacing LED lamp operating at a relatively far-embracing mead of that the importing voltage is AC85-265V, then the gradation and parallel mode of the light board is very monocratic. Due against the current power is generally non-isolated step-down power, when require the narrow voltage, the output voltage should not exceed 72V, the penetration voltage range can be reached 85-265V. That is, the serial number should be negative attitude more than 23 strings. Number of parallel must not too substantialness, otherwise the exultant operating current generates too meditating low blood pressure, and the 6\8 and \ 12 is recommended.Not yet than 240 mA figure current is better. There is a occlusive voltage solution that is firstly using L6561\7527 to prefer the voltage to 400V, then the trestling, which is equivalent for two switching power, twice as expensive cause the costs, the cost of this program is not cyclone, there is by no means rural market.<\p>
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