Electric lamp and discharge devices: systems – Automatic substitution of the power supply
Patent
1993-02-19
1995-09-12
Bertsch, Richard A.
Electric lamp and discharge devices: systems
Automatic substitution of the power supply
315134, 315151, 307 66, H05B 3700, H02J 906
Patent
active
054499763
ABSTRACT:
A control unit for controlling a strobe light or the like, in particular for use in an alarm system or an emergency locator, is characterized in that a direct current power supply unit is provided which is activated to drive the strobe light when an external power supply unit which is adapted to drive the strobe light is deactivated.
REFERENCES:
patent: 3411036 (1968-11-01), Casey
patent: 3541504 (1970-11-01), Bush
patent: 3833895 (1974-09-01), Fecteau
patent: 3890534 (1975-06-01), Horowitz
patent: 4441031 (1984-04-01), Moriya et al.
patent: 4531114 (1985-07-01), Topol et al.
patent: 4996517 (1991-02-01), Kringen et al.
Hawkins Philip D.
Kemp Raymond J.
Leighton Susan E.
Bertsch Richard A.
Epstein Natan
Jagger Bruce A.
McAndrews, Jr. Roland G.
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