Emergency lighting equipment with automatic charge/discharge...

Details Emergency lighting equipment with automatic charge/discharge... Emergency lighting equipment with automatic charge/discharge...

2006-04-25

2006-04-25

Vo, Tuyet Thi (Department: 2821)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

Regulated discharging

C320S135000, C320S134000

Reexamination Certificate

active

07034506

ABSTRACT:
An emergency lighting equipment with an automatic charge/discharge and monitoring system is provided. The emergency lighting equipment comprises an operating mode control circuit, a rectify/voltage-divide and voltage regulation circuit, a main control unit, an illuminating apparatus and a battery. A battery discharge operating is initiated when the main control unit detects the passage of a preset period without any battery discharge operation. The main control unit also terminates a battery discharging operation when the discharge operation is completed and terminates a battery charging operation after the battery has been float-charged for a preset period of time. The emergency lighting equipment may include a battery state inspection circuit for issuing a warning signal when the battery is found to be defective.

REFERENCES:
patent: 5471114 (1995-11-01), Edwards et al.
patent: 6255744 (2001-07-01), Shih et al.
patent: 6441584 (2002-08-01), Crass

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