In November 1781, John Hanson became the first President of the United States in Congress Assembled, under the Articles of Confederation. Many people have argued that John Hanson, and not George Washington, was the first President of the United States, but this is not quite true.
Even and odd mode impedances of a coupled microstrip line. actually I find the reason when you use differential port, the impedance you get is twice the odd mode impedance, whereas if you use common port, the impedance is half the even mode impedance. 1 members found this post helpful.
Medium voltage electronic sectionalizers AutoLink. The ABB AutoLink sectionalizer is an isolating device that automatically isolates the faulted section of the network when a permanent fault occurs. If a temporary fault occurs, the AutoLink allows the upstream recloser or breaker to clear the fault without interrupting the circuit. It is a simple and economic solution for MV overhead lines sectionalizing, towards creating a smart grid and grid optimization.