Low voltage alerting device in a paging receiver and method ther

Details Low voltage alerting device in a paging receiver and method ther Low voltage alerting device in a paging receiver and method ther

1994-12-06

1995-08-15

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

34082544, 340663, 340636, 455 383, G08B 2100, H04Q 700

Patent

active

054423457

ABSTRACT:
A paging receiver with a motor and buzzer for saving a battery voltage by alerting a low voltage state of the battery. A low voltage detector compares the battery voltage with a reference voltage to generate a low voltage detection signal when the battery voltage is less than the reference voltage. In this case, an alerting driver is switched by the low voltage detection signal for cutting off the electrical passage between a motor and the battery and connecting the tone generator to the buzzer so as to generate alert tone.

REFERENCES:
patent: 4392135 (1983-07-01), Ohyagi
patent: 4479261 (1984-10-01), Oda et al.
patent: 4660027 (1987-04-01), Davis
patent: 4755816 (1988-07-01), De Luca
patent: 5032825 (1991-07-01), Kuznicki
patent: 5095308 (1992-03-01), Hewitt
patent: 5140310 (1992-08-01), De Luca et al.
patent: 5265271 (1993-11-01), Marko et al.

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