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TGThe correct selection method and device configuration of LED lighting drive power supply
As the LED energy saving, long life, durable and flexible design, the current LED is rapidly replacing indoor and outdoor lighting in the incandescent and fluorescent lamps. But choosing the right LED is just part of the design equation. In order to achieve full efficiency, durability and longevity of your solid state lighting design, you need to choose the right power supply to match your application requirements and the LEDs used. This article will provide you with some useful advice on where to choose the power supply process to consider.
Related background introduction
Once the LED supply voltage is equal to or greater than the forward voltage drop of the diode (usually in the 2-3V region), the LED begins to produce light. The current required for full brightness varies from device to device, but is typically 350mA for 1W LEDs (usually the smallest size for lighting applications). Unlike incandescent lamps, LEDs are non-linear devices. This means that once the supply voltage exceeds the forward voltage of the diode, the current passed increases exponentially with the supply voltage. Without some form of current regulation, the LED chip will become an expensive, monostable flash bulb.
To prevent this, the power supply must supply the appropriate voltage at the appropriate current. The easiest way is to select a power supply whose output voltage is greater than the sel |
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