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At present, LED illumination market is very vibrant, the led driver companies mainly split into three classes:

One, the LED chip manufacturer, additionally it for the downstream soaked, It merely understands several enterprise understanding and knowledge of BROUGHT fluorescent light power;

Two, the original ordinary illumination manufacturer, when it enter a brand new class, it'll understand some knowledge of signal;

Three, As new entrants in to the manufacturer, they have additional goods or fresh business, some understanding to the led power supply, and a few do not.

Sequence parallel and wide voltage LED lamp table: type AC85-265V to make BROUGHT fluorescent light within the feedback voltage opportunity breadth, the light cell line parallel DIRECTED strategy is very important. Because of the present power supply for non isolated money power, in the request of broad voltage, the output voltage does not exceed 72V, the feedback voltage is obtainable in 85-265V classification. That's to mention, the collection amount of only 23 collection. Simultaneous range is not a lot of, otherwise the performing existing is too large, serious temperature, / 8 and /12 and and introduced for 5. The sum total present does not exceed 240 Ma also.

1,led lamp energy and light dish: some customers to style the lamp section, then find the electricity, find it difficult to get sufficient power supply, voltage or current is too big, too tiny (such as I, 350mA, V < 40V); or the present is also modest, the voltage is too high (such as I 180V), result is significant warmth, reduced performance, maybe not enough input voltage range. Actually, choose one of many perfect string and connection process, placed on each BROUGHT to the voltage and present will be the same, nevertheless the effect of strength could enjoy the best performance. The easiest way will be to transmission and power supply suppliers, tailored.

LED lamp power supply is the most significant section of LED fluorescent lamp, LED light can not utilize incorrect variety, effectiveness, can not possibly standard program. And consumers in the act of assistance, found some problems, put forward some tips, reference for customer selection.

2,why must be frequent: faculties of BROUGHT semiconductor resolved its are affected by setting. For example, elevated temperature deviation, LED expansion of existing, voltage increase, LED current increase. Long-term over additional existing function, lifestyle is likely to be drastically decreased DIRECTED. Although LED is in constant heat and voltage modifications along with other ecological components, to make sure that the working recent of the exact same.

3,BROUGHT operating recent: extra work existing standard LED 20 mA, some producers started to employ around 20 mA, in reality, the present function of heating is very critical, after repeated comparison test, made 16-18 Ma can be an ideal. The total present =17*N D circuit parallel;

4,The operating voltage of the LED proposed working voltage: LED is 3.0-3.5V, after screening, nearly all work in 3.125V, therefore the 3.125V formula is sensible. The sum total voltage =3.125*M M lamp series

 

5, Constant current precision: industry some power supply constant current accuracy is inadequate, such as the common PT4107 / HV9910 / BP2808 / SMD802 plan of regular movement system, the problem is at ± 8% and ± 10%, mistake regular too big. Normal requirements could be within ± 3%. According to the 3% errors, 6 parallel, mistake of every path about ± 0.5PERCENT, if 12 parallel, error of every highway about ± 0.25%, the accuracy will do. Detail is high, the price may significantly enhance. However the led driveway lights , 16 Ma and 18 Ma has little influence.