Annunciator
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United States of America Patent
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May 18, 2004
Grant Date -
N/A
app pub date -
Jan 15, 2002
filing date -
Jan 15, 2002
priority date (Note) -
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Abstract
An annunciator comprises an annunciation and shutdown circuit having input terminals for a first power supply and input terminals for a second power supply. The first and second power supplies are connected to supply power in parallel with each other to the annunciation and shutdown circuit. A logic means responds to a fault signal causing the annunciation and shutdown circuit to switch to low power mode upon sensing that a fault signal has occurred.
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