High-voltage vacuum cladding
High voltage insulation in vacuum

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D2480 V1 Article

High-voltage vacuum cladding
High voltage insulation in vacuum

Author : Tiberiu MINEA

Review date: January 30, 2015 | Lire en français

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2. High-voltage vacuum cladding

Breakdown occurs when the voltage exceeds a certain threshold value Uc known as the breakdown voltage. Above Uc, a significant electric current is established between the electrodes, i.e. an electric discharge [D 2 830][D 320]. The voltage Uc depends not only on the shape, but also on the nature of the material making up the electron-emitting surface, the electrode itself. At the microscopic level of the surface, the electric field is slightly different from the macroscopic field (global between...

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