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led wall lights - China Manufacturer

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Constant current source drive is the best way of LED driver, constant current source driver, not limiting resistor in series in the output circuit, LED flowing through the current without changes in the external power supply voltage, ambient temperature changes, as well as discrete LED parameters impact, which can adhere to the current constant, abundant play a variety of excellent features of the LED.

    LED power to the LED lighting power supply in the automatic detection and control of power during the work will flow through the LED current, thus, need not worry excessively high current flows through the LED in the power of instant, do not worry about the load short-circuit burn out the power.

Constant current drive, it can prevent led underground light forward voltage changes gave rise to the current changes, constant current LED brightness stability, but also facilitate LED lighting plant the purposes of the high-volume consumer products to ensure the differences, and thus many manufacturers have abundant recognize the importance of the drive power, LED lighting manufacturers had to g ive a constant voltage, and selection of capital slightly higher constant current mode to drive LED lamps.

Some manufacturers worry about the power driver board to choose the life of the electrolytic capacitor will affect the power, in fact, is a misunderstanding, for example: If the selection of 105 degrees, the life expectancy of 8000 hours of high-temperature electrolytic capacitor, in accordance with passage of life of electrolytic capacitors budget way reduced by 10 degrees , life expectancy doubled, then its working life in the environment of 95 degrees at 16,000 hours to 32,000 hours life in the work environment of 85 degrees, 75-degree environment, working life of 64,000 hours, if practical work at lower temperatures. then life will be longer! In view of this, just choose the high quality electrolytic capacitors of the drive power of life is no impact!

    Another LED lamps should be aware of: the LED in the course of their work t o release a lot of heat, so that the die junction temperature moving rapidly rising higher LED power, the greater the heating effect. LED chip temperature rise will lead to light-emitting device performance changes in attenuation with the electro-optical conversion efficiency, as well as failure in severe cases, marked according to the experimental test: the LED itself, temperature rise of 5 degrees Celsius, the luminous flux on landing 3%, thus the heat of the LED light source LED lamps must note, as far as possible the situation increase the cooling area of ??the LED light source itself, minimizing the operating temperature of the led lights for homes itself, if conditions allow, the best able to supply the part and the light of local separated, the blind pursuit of the small size while ignoring the operating temperature of the lighting and power is not desirable appearance, compact, but life is short, the light fades to increase the, is a typical "penny wise and pound foolish".