Electrical indicating circuit

Details Electrical indicating circuit Electrical indicating circuit

1985-03-26

1986-12-09

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 32, H02J 704

Patent

active

046282440

ABSTRACT:
In some industrial situations a battery charger is used to supply d.c. power to an electrical equipment, and a battery is connected across the output terminals of the charger so that a "back-up" supply is available if the charger should fail. An indicating circuit is used to generate a warning if an open circuit condition arises in the battery charging circuit. The indicating circuit operates by monitoring the output impedance of the battery charger. If the output impedance exceeds a threshold value the indicating circuit generates a warning signal.

REFERENCES:
patent: 3567487 (1971-04-01), Chase
patent: 4204153 (1980-05-01), Brown
patent: 4385269 (1983-05-01), Aspinwall et al.

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