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How to Compare Car Bulbs:
It's always good to check just what bulbs you're putting into your car. A car's headlights allow the driver to see at night, and allow the vehicle to be seen by others. However, while some drivers will just choose whatever the cheapest bulb available, it pays to slow down and really examine what it is you're putting into your car. Your headlight bulbs are quite important, and you'll get what you pay for.
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The LED light bulbs are tiny bulbs that fit easily into an electric circuit and do not use any filament to burn, as is the case with incandescent bulbs. LEDs are semiconductor diodes, which use electronic chip to create a positive-negative junction, which ultimately leads to the production of light. The process is explained thus.
Upon providing power to the diode, a current flows from the anode (positive) to the cathode (negative). This results in the flow of electrons and electron holes into the junction from electrodes. Now, when an electron meets a hole, it creates a lower energy level that provides energy as light.
LED bulbs available for standard fixtures vary in brightness from less than 50 lumens up to about 1000 lumens. The brightest led bulbs for standard fixtures are the floodlights and spotlights. The brightest of these uses about 25 watts and produces light comparable to a 100-watt incandescent.
The non-directional led bulbs are best for lighting small areas, low-level safety lighting, night-lights, mood lighting, or decorative accent lighting. Using non-directional leds to replace incandescents for general room lighting is not really practical at this time.
The number of leds is not the determining factor of bulb brightness. Different types of leds vary greatly in brightness. The wattage of a led bulb is a better indicator of the light output. The typical light output for the current generation of white leds is about 30 lumens per watt. However, the newest power leds from Cree are in a different category with output up to 65 lumens per watt. Just three of these big leds can output as much light as 100 or more common leds.
