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A chassis ground is a link between different metallic parts of a machine to ensure an electrical connection between them. [1] Examples include electronic instruments and motor vehicles. Usages
The use of the term ground (or earth) is so common in electrical and electronics applications that circuits in portable electronic devices, such as cell phones and media players, as well as circuits in vehicles, may be spoken of as having a "ground" or chassis ground connection without any actual connection to the Earth, despite "common" being ...
The cable has a ground or shield conductor which is connected to the chassis ground of each component. The driver amplifier in component 1 (left) applies signal V 1 between the signal and ground conductors of the cable. At the destination end (right), the signal and ground conductors are connected to a differential amplifier.
Electrical equipment may be designed with a floating ground for one of several reasons. One is safety. For example, a low-voltage DC power supply, such as a mobile phone charger, is connected to the mains through a transformer of one type or another, and there is no direct electrical connection between the current return path on the low-voltage side and physical ground (earth).
Multiple Un-referenced End-Circuits with a single return – isolation between several input signals and circuit chassis/common ground. Subsystem with Isolated Common – isolation between signal input and common ground. Common Chassis Ground – isolation between circuit common and chassis (chassis grounded).
A ground connection that is missing or of inadequate capacity may not provide the protective functions as intended during a fault in the connected equipment. Extra connections between ground and circuit neutral may result in circulating current in the ground path, stray current introduced in the earth or in a structure, and stray voltage.
(The phrase "ground, live, return", corresponding to "X, L, R", is often offered as a memory aid, although the second signal wire is not a "return" in the case of differential signaling) On TRS phone plugs, the tip is signal/non-inverting, the ring is return/inverting, and the sleeve is chassis ground.
Removal of the safety ground connection on equipment can expose users to an increased danger of electric shock and may contradict wiring regulations. [1] The safety ground is disconnected by an adaptor (cheater plug) in a power lead in which the ground conductor is deliberately disconnected, or by cutting a ground pin in the power plug. If a ...