![]() The use of differential signaling can provide rejection of ground-induced interference. Wiring practices that protect against ground loops include ensuring that all vulnerable signal circuits are referenced to one point as ground. Ground loops are a major cause of noise, hum, and interference in audio, video, and computer systems. Current may be produced in a circular ground connection (ground loop) by electromagnetic induction. This is typically caused when enough current is flowing in the connection between the two ground points to produce a voltage drop and cause two points to be at different potentials. ![]() In an electrical system, a ground loop or earth loop occurs when two points of a circuit are intended to have the same ground reference potential but instead have a different potential between them. ( July 2014) ( Learn how and when to remove this template message) Please help improve it to make it understandable to non-experts, without removing the technical details. This article may be too technical for most readers to understand.
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