Circuit for an emergency lighting and fire detector system
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United States of America Patent
Stats
-
Apr 22, 1980
Grant Date -
N/A
app pub date -
Nov 21, 1977
filing date -
Nov 21, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit for a home safety unit having an emergency light system for providing light in the event of a power failure or when a fire is detected, and a fire detection system for providing an audible alarm indicating the existence of a fire. The circuit includes a battery which is constantly being charged and a low voltage responsive system for indicating a low voltage condition on the battery. A latching system causes the emergency light to be turned off when this low voltage condition is reached, and to remain off until the battery is recharged.
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