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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
Long-distance electromagnetic telegraph systems from 1820 onwards [a] used two or more wires to carry the signal and return currents. It was discovered by German scientist C.A. von Steinheil in 1836–1837, that the ground could be used as the return path to complete the circuit, making the return wire unnecessary. [2]
A few two-signal-wire systems lingered on; the Cooke and Wheatstone two-needle system used on British railways, [10] and the Foy-Breguet telegraph used in France. [11] With the reduction in the number of signal wires, the cost of the return wire was much more significant, leading to earth return becoming the standard. [12]
TE Connectivity's transportation segment includes four business units: automotive, industrial and commercial transportation, application tooling, and sensors. TE's products are used by the automotive industry for vehicle body and chassis systems, convenience applications, driver information, infotainment, motor and powertrain applications, and safety and security systems.
Most circuits have the metallic components interconnected with a grounding wire connected to the third, round prong of a plug, and to metal boxes and appliance chassis. Furnaces, electric water heaters, heat pumps, central air conditioning units, electric dryers, electric stoves or cooktops, and built-in microwave ovens must be on dedicated ...
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A technique used in recording studios is to interconnect all the metal chassis with heavy conductors like copper strips, then connect to the building ground wire system at one point; this is referred to as star grounding or single-point grounding. However, in home systems, multiple components are usually grounded through their 3-wire power ...
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).