Apparatus with intermittent enabling means for detecting end of

Details Apparatus with intermittent enabling means for detecting end of Apparatus with intermittent enabling means for detecting end of

1990-05-21

1992-08-04

Harvey, Jack B.

Electricity: measuring and testing

Electrolyte properties

Using a battery testing device

324426, G01N 27416

Patent

active

051362465

ABSTRACT:
An apparatus used in a system powered by a battery for detecting end of battery life. The apparatus includes an electromotive force comparing circuit getting power supply from a battery for comparing electromotive force of the battery with a predetermined value, and an intermittently enabling circuit for intermittently enabling the electromotive force comparing circuit. The electromotive force comparing circuit receives, only when it is enabled by the intermittently enabling circuit, power from the battery to operate. When not enabled, the electromotive force comparing circuit does not consume any power from the battery.

REFERENCES:
patent: 3997831 (1976-12-01), Hopfer
patent: 4544893 (1985-10-01), Takahashi
patent: 4660027 (1987-04-01), Davis

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