Étymologiquement the electrotechnical indicates the study of the technical applications of the electricity. Actually, electrical engineering gathers the disciplines treating electricity as an energy. One can quote the production, transport, the distribution, the treatment, the transformation, management and the electric energy utilization. Sometimes called Electronic engineering , one can locate his birth with the invention of the Dynamo in 1869.

Principles

Electromagnetism

See also: Electromagnetism

The electromagnetism is a branch of the Physique which provides a very general framework of study of the Phénomène S electric S and Magnétique S in their synthesis of the electromagnetic Champ: the electromagnetic field is produced by the sources of the field which are the loads and their movements. This produced field acts in its turn on the loads.

• the Maxwell's equations determine the electromagnetic field starting from its sources, the loads and the currents. The field exerts as for him on the matter a mechanical action, the Force of Lorentz. It is the electromagnetic interaction.

• the electromagnetic interaction is one of the four fundamental interactions. She explains the behavior of the objects of the atomic scale (behavior of the electron S, the atoms and the Molécule S).

• electromotive Force

Three-phase Alternative course - D.C. current

• Representation of Fresnel

Electric impedance

See also: Impedance (electricity)

The electric impedance measurement opposition of an electrical circuit to the passage of the sinusoidal alternative course. The concept of impedance is one generalization of the Law of Ohm in the study of the circuits in alternative course.

• Circuits RLC

Harmonics on the networks

• electric Parasite
• Fourier series
• Current harmonics

Fields

Production

See also: Electrical production, Powerplant

Transport

See also: Electrical communication

Treatment

Static inverters of electricity

• Electronic Electric transformer
• Power supply
• of power

Electromechanical converters and actuators

• Collecting Alternator
• turning
• electric Electromagnet
• Generating
• electromechanical Electrical motor
• Relay

Switchgear

See also: Switchgear, Switchgear with high voltage

One indicates under the term switchgear the whole of the materials allowing the setting under or not under tension of the portions of a Electrical communication.

• Circuit breaker

• Interruptory Disconnecting switch
• Contactor, relay
• Lightning protector

Applications

The electrotechnical applications are used in all the fields of the Industrie (Machine S, Four S, electrolysis), of the Transport (Aéronef S, Navire S, Véhicule S) and, for the manufacture of apparatuses Domestique S (electric household appliances), of Bricolage or Jardinage.

Industry

Transport

Domestic applications

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