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Audio Visual Basics for General and Multi-source …
Audio Visual Basics for General and Multi-source Technicians Common Terminology & Definitions General Terms which affect all AV disciplines Alternating Current AC 1. A current that periodically reverses its direction of flow. In one cycle, an alternation starts at zero, rises to a maximum positive level, returns to zero, rises to a maximum negative level, and again returns to zero. The number of such cycles completed per second is termed the ac frequency. Direct Current DC 1. A current that always flows in the same direction ( , the polarity never reverses).
Audio Visual Basics for General and Multi-source Technicians Common Terminology & Definitions General Terms which affect all AV disciplines Alternating Current AC 1.
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