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Smart Grid Applications
Smart Grid Applications

... thermal, voltage drop, and stability margin.  At present, the thermal status of most power devices is not monitored in real-time. The most detrimental effect to reliability of the system is when equipment is damaged (very long lead times for replacements). ...
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Lab 6 - La Salle University
Lab 6 - La Salle University

< 1 ... 1936 1937 1938 1939 1940 1941 1942 1943 1944 ... 2014 >

Alternating current



Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction. The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.AC is the form in which electric power is delivered to businesses and residences. The usual waveform of alternating current in most electric power circuits is a sine wave. In certain applications, different waveforms are used, such as triangular or square waves. Audio and radio signals carried on electrical wires are also examples of alternating current. These types of alternating current carry information encoded (or modulated) onto the AC signal, such as sound (audio) or images (video).
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