Materials test chamber with xenon lamp radiation
US6285137A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1999 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Aug 26, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A high-instantaneous, low-average current ballast is used in an accelerated weathering apparatus. The ballast includes a DC voltage generator or front end, to generate a high DC voltage, which produces a charging current to charge an arc capacitor. The energy on the arc capacitor is selectively released into a xenon lamp as short, high-current pulses. A starting transformer acts to strike an arc in the lamp. A switch is connected between the capacitor and the lamp, and is used to control generation of current pulses developed for the xenon lamp. A timer is implemented to control operation of the transformer and switch to selectively generate the current pulses for the xenon lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.