Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1975-09-17
1977-05-31
Krawczewicz, Stanley T.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
320 48, 324133, 340249, G01N 2742
Patent
active
040272311
ABSTRACT:
A battery charge indicator for determining the remaining useful life of a battery which accurately measures the battery voltage in an operational environment and provides an indicator of relative levels of the operational condition of the battery and a proportional measurement of its expected life utility. The device employs solid state circuit elements for compactness, which include a Zener diode as a reference voltage element coupled to a voltage divider network and a plurality of amplifiers connected to an array of separate indicators such as light emitting diodes, which indicate particular battery voltage. A thermistor network may be included to provide compensation for temperature variations of the operational environment of the battery and load.
REFERENCES:
patent: 2745094 (1956-05-01), Harrington
patent: 3157870 (1964-11-01), Mariano et al.
patent: 3487295 (1969-12-01), Nocera et al.
patent: 3796951 (1974-03-01), Joseph
R. J. Fritz, "Indicating Lamp System for Diagnostic Measurement", IBM Teccal Disclosure Bulletin, vol. 16, No. 9, Feb. 1974, pp. 2841-2842.
Dynda Frank J.
Edelberg Nathan
Krawczewicz Stanley T.
Murray Jeremiah G.
The United States of America as represented by the Secretary of
LandOfFree
Battery charge indicator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Battery charge indicator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Battery charge indicator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-661060