Power supply control device in fire alarm system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 29, 1992
Grant Date -
N/A
app pub date -
Jan 23, 1990
filing date -
Jan 31, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A power supply control device is provided in a fire alarm system having terminals such as fire detectors and/or repeaters with comparators to detect abnormalities such as fire or an operating status of controlled apparatus, and is equipped with a reference voltage supply a source to supply reference voltage to the comparators, and a power supply control to allow the reference voltage to be supplied to the comparators only during the detecting time.
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Family
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Cited Art Landscape
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