LED lights are now being used almost anywhere in the world. Their various applications include lights on roads, to lights in houses, industries, vehicles and so on. The word LED is an acronym for Light Emitting Diode. This diode is in solid state and functions like a tiny 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 traditional 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 lots of purposes, as of now, most of LEDs available in the market are for lights that receive supply under 12 Volts. That is the reason the 12 volt LED lights deserve a special mention.
12 Volt LED lighting is nice lighting. The commonest application of such a lighting is in auto. Identifying the number of LEDs could be linked to the 12 Volt supply can be quite tough. LEDs are sold in packages that mention relevant specifications.
The info relevant to the 12 Volt LED lighting is the operating current, along with forward voltage. The number of LED bulbs could be connected in a series to the 12 volts supply is determined by dividing 12 volts by the operating current stated on the package.
There is another way 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 stated on LED's package provides the required resistance in ohms for connecting the LEDs. According to this info the particular resistors could be used. Using a slightly greater resistor will be a safer alternative than using a a bit lower resistor.
Polarity is another significant factor while wiring LEDs. Negative legs & Positive legs of LEDs might 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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