LED Panel Light Analysis. Start Up Project 24

2AWe see lot of LED Panel Lights flooding cool light in commercial buildings, offices, banks etc. I love LED Panel lights because these are high efficient and economic lights. They also not cause any eye strain. Unlike LED Bulbs, the efficiency of LED panel lights is very high and gives the Lumen, K and Power as per the specifications provided because of the use of LED Driver with constant current output .The use of LED driver increases efficiency because the input AC fluctuations will not reflects in the output. So the LED Driver gives constant voltage and current for the LEDs inside the Panel. The result is uniform light throughout the life period of the Lamp as high as 1 lack hours. The only problem in the LED Panel lights is that the Driver may fail if there is a high voltage surge in AC lines that may occur during unexpected lightning or other reasons. But we can easily replace the Driver because it is externally connected. The cost of the Driver is between Rs.50 and Rs.100. Let us analyse one LED Panel light to see its interior and efficiency.
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Solar Day Light. Start Up Project 15

1Why use lights during day time to waste electricity? Sometimes we need it in some rooms. We can go for a “Green Solution” to harvest Solar energy for lighting an LED light during day time. Just fix a small Solar panel and a Strip LED. It needs no battery  because the solar panel itself acts as a battery. It generates DC voltage when the Photons of the Sunlight energize its semiconductor. So the light remains on throughout day time. You need only a 12V Solar panel and a Strip LED. Connect and relax. It will do its work for 20 years. No circuit is in it and you can easily connect it.
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Strip LED Lamp

This is my latest circuit published in EFY Sept 2011 issue. It is a simple White LED Lamp that automatically turns on in the evening and stays on till morning. It uses the recently evolved SMD  Strip LED Chips.

STRIP LED LAMP Click to see