Power Line Communication
Power Line Communication (PLC) is a technology that enables data transmission over existing electrical power lines, allowing devices to communicate without dedicated wiring. It works by modulating data signals onto the electrical current, typically using frequencies above the standard 50/60 Hz power frequency. This enables applications like home automation, smart grid management, and broadband internet access through power outlets.
Developers should learn PLC when working on Internet of Things (IoT) systems, smart home automation, or industrial control networks where running new cables is impractical or costly. It's particularly useful in retrofitting existing buildings with smart devices, enabling energy management in smart grids, and providing last-mile broadband in areas with limited infrastructure. Knowledge of PLC is valuable for roles in embedded systems, telecommunications, and utility companies.