Automatic protective circuit system for emergency lights

Details Automatic protective circuit system for emergency lights Automatic protective circuit system for emergency lights

1984-04-11

1986-02-18

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 14, 307 66, 362183, H02J 700

Patent

active

045715319

ABSTRACT:
An automatic protective circuit system for emergency lights includes in combination: a power supply circuit for being coupled with the external power source; a charging circuit connected to the power supply circuit; an upper-limit charging control circuit matched with a lower-limit charging control circuit respectively coupled with the charging circuit and the storage battery; a lower-limit discharging control circuit matched with a pair of double-pole switches and a push-button switch connected to the storage battery and the lights; and a discharge actuating circuit coupled between the power supply circuit and the lower-limit discharging control circuit; thereby, the storage battery of the emergency lights can be effectively protected from being overcharged and overdischarged for extending the life span of the emergency lights.

REFERENCES:
patent: 3710134 (1973-01-01), Guthart
patent: 3976986 (1976-08-01), Zabroskie
patent: 4150302 (1979-04-01), Roche
patent: 4156891 (1979-05-01), Roche

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