LED drive power characteristics
(1) highly reliable
Especially as LED lights drive power, installed in the air, maintenance is not convenient, mainten
ance costs are also large.
(2) high efficiency
LED is energy-saving products, drive power efficiency is higher. It is very important for the
power supply to be installed in the fixture. Power efficiency is high, its power consumption is
small, in the lamp heat is small, it will reduce the lamp temperature. To delay the LED light fai
(3) high power factor
The power factor is the load on the grid. Generally less than 70 watts of electrical appliances,
there is no mandatory indicators. Although the power is not a single power factor lower power fac
tor little effect on the power grid, but the use of large amount of light at night, the same type
of load is too concentrated, the grid will produce more serious pollution. For 30 watts to 40 wa
tts of LED drive power, it is said that in the near future, may have a certain degree of power
(4) drive mode
Now there are two kinds of traffic: one is a constant pressure source for a number of constant
current source, each constant current source to each LED power supply. This way, the combination
flexible, all the way LED failure, does not affect the work of other LED, but the cost will be
slightly higher. The other is a direct constant current power supply is "in the Division Huibao"
to use the drive mode, LED series or parallel operation. Its advantage is a little lower cost, but
the flexibility is poor, but also to solve an LED failure, does not affect the other LED operation
problems. These two forms coexist for a period of time. Multi-channel constant current output
power supply, in terms of cost and performance will be better. Perhaps the future direction of
(5) Surge protection
LED anti-surge capability is relatively poor, especially anti-reverse voltage capability. It is
also important to strengthen this protection. Some LED lights installed in the outdoors, such as
LED lights. Due to the load of the grid load and lightning induction, from the grid system will
invade a variety of surges, and some surge will lead to LED damage. Therefore, the analysis of "
in the Division Huibao" drive power in the surge protection should have a certain lack of, and as
the frequent replacement of power and lighting, LED drive power to suppress the surge of intrusion,
the protection of LED is not damaged capacity.
(6) protection function
Power supply In addition to the conventional protection function, it is best to increase the
constant current output LED temperature negative feedback to prevent the LED temperature is too
high; to comply with safety and electromagnetic compatibility requirements.