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LED Lighting : Used Practically All Over The World
LED lights are now being used almost everywhere. Their various applications include lights on roads, to lights in houses, industries, cars etc. The word LED is an acronym for Light Emitting Diode. This diode exists in solid state and functions like a small bulb.
LED lights might be made of one or more of such bulbs. That is the reason LED bulbs last a lot longer than any typical bulbs. Not only do these lights last longer, they also do not consume much power.
LED lights do have a disadvantage. Though they could be used for numerous purposes, currently, most of LEDs available in the market are for lights that receive supply below 12 Volts. This is the reason the 12 volt LED lights deserve a special mention.
12 Volt LED lighting is good lighting. The most common use of such a lighting is in vehicles. Determining how many LEDs can be linked to the 12 Volt supply can be quite tricky. LEDs are sold in packages that mention related specifications.
The info related to the 12 Volt LED lighting is the operating current, and forward voltage. How many LED bulbs can be connected in a series to the 12 volts supply is determined by dividing 12 volts by the operating current mentioned on the package.
There is another technique for connecting 12 Volt LED lights is to identify the resistance. Because of this, the forward voltage stated on the LED's package is deducted from 12 volts. Then the remainder when divided by the operating current mentioned on LED's package gives the required resistance in ohms for connecting the LEDs. Based on this information the particular resistors can be used. Using a a little greater resistor will be a safer option than using a somewhat lower resistor.
Polarity is another significant factor while wiring LEDs. Negative legs & Positive legs of LEDs may be of different lengths. LED's package will denote the polarity. The resistor needs to be wired in series on the positive leg to the LEDs.
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