NICKEL/CADMIUM AIRCRAFT BATTERIES: BATTERY ALARM UNIT

Authors
  1. Feldman, K.
  2. Hayashi, R.M.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
The battery alarm unit described in the paper is a simple device which monitors the cell voltages by comparing the voltage in one half of the battery with that of the other half. Only three connections to the battery are required. Atypical voltage changes in a single cell, of the order of 50 mV may be detected. The precise sensitivity may be varied by varying resistor values in the input network. The instrument has been found useful in the battery shop both for warning of failing cells in batteries being charged and for attracting attention to cells which show low capacity while being discharged. Presumably the instrument could be equally useful as an early warning device on aircraft.
Report Number
TN-77-7 —
Date of publication
15 Apr 1977
Number of Pages
15
DSTKIM No
77-02295
CANDIS No
102624
Format(s):
Hardcopy;Originator's fiche received by DSIS

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