alternuar

Alternuar is a term that refers to the alternating current (AC) electrical systems that were historically used and, in many cases, continue to be used in power distribution. This stands in contrast to direct current (DC) systems. The primary advantage of AC is its ability to be efficiently transformed to different voltage levels using transformers. This allows electricity to be transmitted over long distances at high voltages to minimize energy loss and then stepped down to safer, usable voltages for homes and businesses.

The development and widespread adoption of AC systems are largely attributed to the work of Nikola Tesla and George Westinghouse in the late 19th century, often referred to as the "War of the Currents" against Thomas Edison's DC systems. AC's flexibility in voltage transformation made it the dominant standard for power grids worldwide. Modern electrical grids predominantly operate on AC, with frequencies typically standardized at 50 Hz or 60 Hz depending on the region. While DC is still crucial for certain applications like electronics, battery storage, and some specialized industrial processes, the bulk transmission and distribution of electricity remain firmly in the realm of AC.