File:Ground loop - leakage currents.svg
![File:Ground loop - leakage currents.svg](https://upload.wikimedia.org/wikipedia/commons/thumb/5/53/Ground_loop_-_leakage_currents.svg/800px-Ground_loop_-_leakage_currents.svg.png?20180105180706)
Original file (SVG file, nominally 1,356 × 617 pixels, file size: 37 KB)
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Summary
[edit]DescriptionGround loop - leakage currents.svg |
English: A schematic diagram showing a ground loop between two electronic components C1 and C2, such as audio or video components and how leakage currents (red) flowing through the building's utility ground wire system can flow through the ground loop, causing interference in the electronic components. Ground loops are one of the most common causes of hum and interference in audio, video, and computer systems. Leakage currents from power appliances like motors (A) can flow through the "third wire" ground system (G) in home utility wiring, causing voltage drops of up to 5 - 10 volts between ground terminals on different outlets. In this diagram there is a "ground loop" consisting of the shield conductor of the signal cable S connecting the two components, plus the "third wire" ground wires P in their power cords, that connects the ground terminals of the two outlets, providing a second path for the leakage current. The leakage current from the appliance divides, and some flows up the power cord ground wire P of C1, through the shield conductor of S to C2, and down the ground wire P of the C2 power cord, and back into the utility ground wire G on its way to the utility ground. The 50/60 Hz AC current through cable S shield conductor causes a voltage drop that is added to the signal at the destination end (C2), and may manifest itself as "hum" in audio speakers, "snow" or interference on video, or erratic operation and crashes in computers. |
Date | |
Source | Own work |
Author | Chetvorno |
Licensing
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse |
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:07, 5 January 2018 | ![]() | 1,356 × 617 (37 KB) | Chetvorno (talk | contribs) | Reverted vandalism; original drawing was replaced by a copy of File:Ground_loop_-_leakage_currents.svg. Restored original drawing |
01:28, 23 December 2017 | ![]() | 999 × 661 (47 KB) | Marcnovac (talk | contribs) | Reverted to version as of 10:45, 3 February 2014 (UTC) | |
10:48, 3 February 2014 | ![]() | 1,356 × 617 (50 KB) | Chetvorno (talk | contribs) | Oops, previous version was wrong file | |
10:45, 3 February 2014 | ![]() | 999 × 661 (47 KB) | Chetvorno (talk | contribs) | Redrew in mirror image so ground current flows in opposite direction through cable S to make the math come out right | |
09:11, 3 February 2014 | ![]() | 1,350 × 617 (50 KB) | Chetvorno (talk | contribs) | Previous version had corrupt markup that caused current arrow to display backward | |
08:11, 3 February 2014 | ![]() | 1,350 × 617 (49 KB) | Chetvorno (talk | contribs) | User created page with UploadWizard |
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Height | 617.33563 |