Kits for converting DC battery powered smoke detectors to AC pow

Details Kits for converting DC battery powered smoke detectors to AC pow Kits for converting DC battery powered smoke detectors to AC pow

1995-04-13

1997-06-17

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

340628, 340627, 169 23, 169 51, 169 52, 363 15, 363 39, 363 74, 363 84, 363108, H02J 906

Patent

active

056400586

ABSTRACT:
Methods, circuits, and kits for converting battery powered smoke detectors to AC power include a power converter which converts standard household AC voltage to a DC voltage suitable for use by a battery powered smoke detector and a battery clip connector for connecting the power converter to the battery clips of a battery powered smoke detector. According to one embodiment of the invention, a light emitting diode is coupled to the battery clip connector to indicate the presence or absence of DC voltage at the smoke detector. According to another embodiment of the invention, several battery powered smoke detectors are coupled to a single power converter. In yet another embodiment of the invention, several battery powered smoke detectors are provided with an AC power supply having an automatic battery back-up power supply. Preferred aspects of the invention include: providing the battery backed-up AC power supply with a battery tester and providing fuses for each smoke detector and for the battery.

REFERENCES:
patent: 3363109 (1968-01-01), Wilhelm
patent: 4334275 (1982-06-01), Levine
patent: 4380760 (1983-04-01), Kornblit
patent: 4419658 (1983-12-01), Jarosz et al.
patent: 5019805 (1991-05-01), Curl et al.
patent: 5135567 (1992-08-01), Chimento
patent: 5157271 (1992-10-01), Fujiwara
patent: 5315292 (1994-05-01), Prior
patent: 5382341 (1995-01-01), Aroutiounian et al.
patent: 5384562 (1995-01-01), Greenfield
patent: 5461367 (1995-10-01), Altavela et al.
Radio Shack Corporation Catalog, 1984 p. 113 Jan. 1, 1984.

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