The popularity of modern high efficiency white LEDs have grown immensely in the recent past. The reason behind the popularity is due to some vital advantages associated with these devices.
White LEDs are able to produce eye-blinding light intensities using amazingly low power supply inputs. The light produced from white LEDs is milk-white in color which is gentle and gives a soothing effect to the eyes, and becomes ideal for reading purposes. Moreover these lamps are small, unbreakable, weather proof and as discussed above are highly efficient with their performance.
LEDs can be used as single units or can be made into groups to any extent, thus the application using LEDs as lamps offers a wide range as far as light and power selection are concerned.
A single LED can be used to make a small decorative electronic candle, a group of 10 LEDs produces enough light for illuminating corridors, stairways and for small table lamps, LED lamps incorporating within a hundred LEDs become suitable for small home lighting purposes and in this way we can go on increasing the individual units for illuminations as per requirements or as per our personal preferences.
White LED lamps are also being used for high intensity light applications like automobile headlights, and in the future it won’t be surprising if they are used as stadium flood lights.
LEDs can be operated through voltages as low as 4 volts with minimum currents not exceeding 10 mA. Amazingly, when these are connected in series for greater illumination, only one parameter, the voltage needs to be increased appropriately for the required proportionate increase in their illumination, the current stays constant at the original level, that is either at 10 mA or 20 mA which was initially used for driving a single LED. This property becomes the unique feature of LEDs and is the main reason why they are so economical with power consumption.
Here we will discuss how to make your own LED light fixture which may be built and used to replace with your home’s age old, inefficient fluorescent tube light fixture.
The proposed design will have the following specifications:
Operating Voltage – 230 VAC or 120 VAC
Current Consumption – 100 mA @ 230 VAC, 200 mA 120 VAC,
Power Consumption – 25 watts,
Luminous Intensity – 7000 × 250 mcd