LED lights are now being used virtually anywhere. Their various applications include lights on streets, to lights in houses, industries, vehicles and more. The word LED is an acronym for Light Emitting Diode. This diode is in solid state and functions just like a small bulb.
LED lights might be made of one or more of such bulbs. This is the reason LED bulbs last a lot longer than any conventional bulbs. Not just do those lights last longer, they also do not use up much power.
LED lights do have a disadvantage. Though they can be used for lots of purposes, as of now, majority of LEDs available 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 application of such a lighting is in auto. Identifying the number of LEDs could be linked to the 12 Volt supply can be very tricky. LEDs are sold in packages that mention related specifications.
The information related to the 12 Volt LED lighting is the operating current, as well as 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 technique for connecting 12 Volt LED lights is to identify the resistance. For this, the forward voltage stated on the LED's package is deducted from 12 volts. 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 information the particular resistors can be used. Using a slightly greater resistor would be a more secured alternative than using a somewhat lower resistor.
Polarity is another critical factor while wiring LEDs. Negative legs & Positive legs of LEDs may be of different lengths. LED's package will indicate the polarity. The resistor needs to be wired in series on the positive leg to the LEDs.
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