Solar system alarm backup unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 12, 2005
Grant Date -
Oct 2, 2003
app pub date -
Apr 2, 2002
filing date -
Apr 2, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A backup electrical power unit for an alarm panel. The unit comprises a solar panel array which produces an array output DC voltage and a charging current for a battery through a first circuit at a first voltage level of the battery output voltage. This circuit disconnects the array output from the battery terminal output at a second battery voltage level. The charging current resumes when the battery output voltage is at or below the first voltage level. The backup unit also includes a second circuit interposed electrically, serially with the first circuit to disconnect the array output from the battery terminal output below a disconnect, voltage level. A circuit is provided for connecting the battery to the alarm panel when the primary power to the alarm panel is interrupted. Status indicators are provided.
First Claim
Family
International Classification(s)
Cited Art Landscape
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