Materials test chamber with xenon lamp radiation
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United States of America Patent
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-
Sep 4, 2001
Grant Date -
N/A
app pub date -
Aug 26, 1999
filing date -
Aug 26, 1998
priority date (Note) -
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status (Latency Note)
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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.
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