Solar system alarm backup unit

Details Solar system alarm backup unit Solar system alarm backup unit

2005-07-12

2005-07-12

Hofsass, Jeffery (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S636200, C340S693400, C340S333000, C340S636190

Reexamination Certificate

active

06917298

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.

REFERENCES:
patent: 4434395 (1984-02-01), Higuchi
patent: 4764757 (1988-08-01), DeMarco et al.
patent: 5438225 (1995-08-01), Berger
patent: 5563456 (1996-10-01), Berger
patent: 5883577 (1999-03-01), Jordan
patent: 6157168 (2000-12-01), Malik
patent: 6201370 (2001-03-01), Reller et al.
patent: 6587051 (2003-07-01), Takehara et al.

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