Battery voltage alarm apparatus

Details Battery voltage alarm apparatus Battery voltage alarm apparatus

1992-07-28

1994-04-19

Peng, John K.

Communications: electrical

Condition responsive indicating system

Specific condition

320 48, 324435, G08B 2100

Patent

active

053049861

ABSTRACT:
There is provided a battery voltage alarm apparatus which announces the necessity of battery exchange when battery voltage falls below a predetermined level. The battery voltage alarm apparatus has a battery voltage detector, and a plurality of steps of detection levels for raising battery low voltage alarm are set and alarm sounds generated at individual levels are made to be different from each other. An alarm raised at a higher level is made to be an intermittent singing or a low-volume singing in order to reduce power consumption.

REFERENCES:
patent: 4536757 (1985-08-01), Ijntema
patent: 4547770 (1985-10-01), Suzuki et al.
patent: 4660027 (1987-04-01), Davis
patent: 4755816 (1988-07-01), DeLuca
patent: 5140310 (1992-08-01), DeLuca et al.

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