LED power classification and choice - (AddTime ： 2013-01-15)

200W led Flood light power supply there are many kinds of classification methods:

According to the output characteristics of the different can be divided into constant pressure series, constant current series,

According to the input characteristics of the different can be divided into ordinary series, and high power factor series;

According to the use different cent is waterproof series, and waterproof series;

According to the circuit structure is divided into different isolation series, and not isolation series;

According to the different control modes are divided into adjustable light series, and adjustable light series.

200W led Flood light due to environmental protection, long service life, photoelectric conversion efficiency higher many advantages, in theory, the service life of 200W led Flood light in 100000 hours, but in the practical application process, because the design of the driving power and drive mode selection is undeserved, or do not match with 200W led Flood light lights, 200W led Flood light light failure easily damaged or very serious. Reduce the reliability of the 200W led Flood light lamps and lanterns.

Due to the 200W led Flood light manufacturers and 200W led Flood light specifications different, current, voltage characteristic are difference. Now to white light 200W led Flood light typical specifications for example, according to the 200W led Flood light current, voltage change rule of general application forward voltage of 3.0-3.6 V or so, typical value voltage of 3.3 V, current for twenty ma, when applied to 200W led Flood light both ends of the forward voltage more than 3.6 V, the forward voltage small increase, 200W led Flood light the forward current can fold growth, make the 200W led Flood light light temperature rise too fast, thus accelerating 200W led Flood light light attenuation, 200W led Flood light life shorten, serious when even burn out 200W led Flood light . According to the 200W led Flood light of voltage, current change characteristics and the drive power supply design puts forward strict requirements. Many current manufacturers 200W led Flood light lamp products (such as barrier, light cup, reflectoscope), the resistance, let the blood pressure, and then with a zener diode voltage regulator, to 200W led Flood light power supply, so drive 200W led Flood light in the way great defects, the first is low efficiency, in dropping resistance consumes a large amount of electrical energy, there might even more than 200W led Flood light power consumed, and could not provide large current drive, because the current consumption in dropping resistance on the greater the power, so many products 200W led Flood light can't use parallel way, all the ways to reduce the current series. The second is stabilized voltage ability is poor, there is no guarantee that through the 200W led Flood light current is not more than the normal job requirements, design products will reduce the power supply voltage 200W led Flood light both ends to drive, this is to reduce the cost of 200W led Flood light brightness. The resistance, let decompression way drive 200W led Flood light , 200W led Flood light brightness not stable, when the power supply voltage, the 200W led Flood light luminosity, high voltage power supply, 200W led Flood light the brightness of the light some. Resistance, let decompression way 200W led Flood light drive the biggest advantage is low cost.

According to the characteristics of the changes of 200W led Flood light current, voltage, the constant pressure drive 200W led Flood light is feasible, although commonly used voltage regulator circuit, there is stabilized voltage precision insufficient and steady flow ability more bad of faults, but in some product application may be too precise design, its advantage is still cannot be replaced by other driving mode.

The constant current drive mode, it is the ideal 200W led Flood light driving mode, it can avoid 200W led Flood light forward voltage caused by the change of the current change, at the same time constant current make 200W led Flood light brightness stability. So many manufacturers choose constant current drive 200W led Flood light way.

But as a result of all kinds of different 200W led Flood light power performance and conversion efficiency each are not identical, so choose the appropriate and efficient 200W led Flood light special power supply, can we truly reveal 200W led Flood light light source high performance characteristics. Because of the low efficiency of the 200W led Flood light power itself need to use a lot of electricity, so in the process of power supply for 200W led Flood light can highlight 200W led Flood light energy saving features. In a word, the 200W led Flood light power supply in 200W led Flood light the stability, energy conservation and length of life, has an important role.