Direct Current to power applications

The EMerge Alliance says low-voltage direct current built into interior spaces can power LED lights, sensors and other devices more efficiently that the AC wiring in use today. While AC may have huge advantages over DC for transmitting power, many of the devices in use today have to convert it into direct current, with resulting efficiency losses. A very common example is a computer, with its AC-to-DC adapter that gets warm as power is converted to heat – lost in the conversion process. But lots of other gear used in buildings need direct current, including many types of lighting, he said. Electronic ballasts, which control current for some fluorescent and high-intensity lights, use direct current, as do light-emitting diodes, or LEDs.

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