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18/06/2013 09:26
2, the power tube heat
LED Bulb
Power consumption of the power tube is divided into two parts, switching losses and conduction losses. Note that most applications especially mains LED drive applications, damage to switches larger than conduction losses. Switching losses and power tube cgd and...
18/06/2013 09:26
3, LED anti-pulse problem
LED Downlight
The problem with vendors remains controversial, in my practice do exist, the main reaction in the cold pulse, that is the moment of power, a few power-on LED in the cold state of instantly breakdown or disconnected. I think it is not...
18/06/2013 09:21
To find ways to reduce the frequency of it! Note, however, when the frequency is reduced, in MR16 order to obtain the same load capacity, the peak current is bound to large or inductance becomes large, which are likely to cause the inductor into saturation region. If the inductor...
17/06/2013 09:42
Dimming the light intensity changes
LED Bulb
Some portable devices based on ambient light conditions to adjust the brightness of its light output, some devices in a short period of idle time reduce its intensity through the software. Which require LED with adjustable...
17/06/2013 09:42
Second, subsystems and external systems cut off, if the external system instability will affect the LED Downlight security subsystem; hand subsystem internal component damage occurs, such as a short circuit failure mode parallel device, or due to external factors cause internal...
17/06/2013 09:38
Figure 10 DAC through a consistent change in the LED forward current to control the LED dimming. MR16
Do not move the color coordinates dimming called pulse-width modulation. It can be enabled by the vast majority of available power or shutdown control...
14/06/2013 09:12
Increasing the cooling effect of the cooling surface to ensure resolved on the basis of the LED Bulb different directions of the natural wind and rain erosion and can easily remove dust deposited sticky in nature, to ensure the heat sink cooling effect of the housing from the harsh...
14/06/2013 09:12
A 2 in. wafers can be cut out of more than 6000 LED chips, there is only the individual and the LED Downlight overall chip performance indicators are different. And an excellent chip makers manufacture chips in color, brightness, and other aspects of the voltage drop difference is very...
14/06/2013 09:11
Thermal grease is used to fill the aluminum plate and the gap between the fins of a material, MR16 this material is also known as a thermal interface material. Its role is used to conducting aluminum plate fin heat emanating make...
13/06/2013 09:38
Four conclusions
LED Bulb In short, the performance shown in Table 1 for a summary of a typical data card and LED with the real conditions in the application of the lighting conditions are completely...
