High-voltage capacitor manufacturing method and high-voltage capacitor
US5587869A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1995 |
| Grant date | Dec 24, 1996 |
| Priority date | — |
| Expiry date | Feb 17, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G4/224
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high-voltage capacitor is not deteriorated by any of a laser medium gas, ultraviolet rays, and discharge plasma of a gas laser device. Inside a hermetic casing is stored a capacitor body having an electrode which is connected to an external terminal. The external terminal includes a passageway therein which makes the inside of the hermetic casing communicate with the outside of the hermetic casing. The external terminal is led to the outside of the hermetic casing from the capacitor electrode, and gas inside the hermetic casing is discharged through the passageway of the external terminal to achieve a reduced pressure. Thereafter, the inside of the hermetic casing is filled with an insulating protection material. With the hermetic casing being made of alumina and the electrode terminal plated with nickel, deterioration due to ultraviolet rays or discharge plasma generated by an electric discharge of the laser device is prevented, thereby not contaminating the ambient gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.