Battery voltage discriminator circuit

Electricity: measuring and testing – Electrolyte properties – Using a battery testing device

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324429, G01N 2727

Patent

active

051111489

ABSTRACT:
A battery voltage discriminator circuit for an apparatus having a battery and a plurality of loads which are driven by the battery and operate under various kinds of load conditions is disclosed. When the output voltage of said battery means drops under a predetermined reference voltage, the circuit generates a signal indicative of the voltage drop. The circuit has a reference voltage setting circuit for setting the reference voltage to one of predetermined values, which corresponds to the kind of the current load condition, and a reference voltage change circuit for activating the reference voltage setting circuit for a period of time in response to the change in the kind of current load condition.

REFERENCES:
patent: 3870954 (1975-03-01), Hanson et al.
patent: 4352067 (1982-09-01), Ottone
patent: 4521735 (1985-06-01), Kageyama et al.
patent: 4618780 (1986-10-01), Ikoma et al.
patent: 4888716 (1989-12-01), Ueno
patent: 4949046 (1990-08-01), Seyfang
IBM Technical Disclosure Bulletin, vol. 29, No. 6, Nov. 1986, pp. 2641-2643; "Method for warning users of a low battery-powered computer".
IBM Technical Disclosure Bulletin, vol. 26, No. 108, Mar. 1984, pp. 5371-5372; J. M. Joyce et al: "Self-adjusting overcurrent for current mode, regenerative driven, high frequency power supplies".

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