However, most LED chip suppliers today are in danger of going out of business because the low-voltage LED chips they produce today will be increasingly difficult to sell into the LED general lighting market. why? Because of the appearance of high voltage LEDs, high voltage LEDs have two distinct competitive advantages over low voltage LEDs:
First, at the same output power, high-voltage LEDs require much lower drive current than low-voltage LEDs. For example, Epistar's high-voltage, blue light 1W LED has a forward voltage drop of up to 50V, which means that it can output 1W with only 20mA of drive current, while a 1W LED with a normal forward voltage drop of 3V requires 350mA. The drive current can only output 1W power, so the high-power LED with the same output power dissipates much less power during operation than the low-voltage LED, which means that the cost of the heat-dissipation aluminum housing can be greatly reduced.
Second, high-voltage LEDs can significantly reduce the loss of AC-DC conversion efficiency. Taking 10W output power as an example, if a 1W high voltage LED with a forward voltage drop of 50V is used, the output can be configured with 2 and 4 strings, and the forward voltage drop of 4 series LEDs is 200V, which means that only from the city Electric 220V alternating current (AC) using bridge rectifier and drop 20V on it. However, if we use a 1W low-voltage LED with a forward voltage drop of 3V, even if the forward voltage drop of 10 strings is not more than 30V, it means that we need to step down from 220V AC to 30VDC. We know that the lower the differential pressure between input and output, the higher the conversion efficiency from AC to DC. It can be seen that if a high voltage LED is used, the efficiency of the transformer can be greatly improved, which can greatly reduce the power loss during AC-DC conversion. A reduction in heat consumption can further reduce the cost of the heat sink.
Therefore, if high-voltage LEDs are used to develop LED general lighting products, the overall power consumption can be greatly reduced, thereby greatly reducing the design requirements for heat-dissipating housings. For example, we can meet the heat dissipation requirements of LED lamps with a thinner, lighter aluminum housing. Since the cost of the heat-dissipating aluminum housing is one of the major cost components of the LED lighting, the cost reduction of the aluminum housing also means that the overall cost of the LED lighting is effectively reduced.
It can be seen that high-voltage LEDs can bring about an effective reduction in the cost and weight of LED lighting fixtures, but its more important significance is to significantly reduce the design requirements of the cooling system, which effectively clears the largest LED lighting fixtures into the indoor lighting market. Technical obstacles. Therefore, high-voltage LEDs will dominate the future of the LED general lighting market.
3.5 Inch LED Downlights can be detachable in two parts. The module and 3.5 Inch size rings. For the 3.5 Inch LED Downlights' module, it can be do for 5W and 9W. That is, for the size of 3.5 Inch LED Downlights, we can do 5W and 9W. Black color for module. White, black, silver color for ring. Color temperature (CCT): 2600-2700K, 2800-3200K, 3800-4200K, 5000K-5500K, 6000-6500K. AC100-240V. 50Hz. 270G. For the 3.5 Inch downlights, inner diameter is 80mm. Outer diameter is 110mm. Height is 50mm. It can be embed into 80-100mm cut out hole size. High CRI, hight PF, 9W cool white flux can be reach 774lm. 120Â° beam angle. Dimmable or Non-dimmable function are available.
3.5 Inch Led Downlights
3.5 Inch LED Downlights, White 3.5 Inch LED Downlights, Black 3.5 Inch LED Downlights, LED Downlights Recessed Lighting
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