Inductor in a DC Circuit. DC-Circuits > Inductor in a DC Circuit. An Inductor is a passive device that stores energy in its Magnetic Field and returns energy to the circuit whenever required. An Inductor is formed by a cylindrical Core with many Turns of conducting wire. Figure 1 and Figure 2 are the basic structure and the schematic symbol of the Inductor.
Charlemagne was crowned Emperor of the Roman People on December 25,  800 AD, by Pope Leo III, in St. Peter's Basilica, in Rome. His  empire, however, is not usually consider â¦ ed the same as the Holy  Roman Empire.    Today, the empire of which he was crowned is usually called the  Carolingian Empire.
The empire did not expand significantly after 800. In 813 Charlemagne designated his sole surviving son, Louis, as his successor, and personally crowned him in a ceremony conducted at Aachen. Charlemagne died at Aachen, on January 28, 814 after some four years of poor health.