Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Patent
1980-10-10
1983-03-08
Tokar, Michael J.
Electricity: measuring and testing
Electrolyte properties
Using a battery testing device
324429, 307359, G01N 2742
Patent
active
043762662
ABSTRACT:
Disclosed is a device for the measurement of peak values of a nonperiodic phenomenon having a low recurrence rate. A voltage comparator has one input connected to the potential U.sub.e to be measured with its output connected through a rectifying circuit to a parallel RC circuit. The output of the rectifying circuit is also connected to a high input impedance circuit whose output which is indicative of the peak value measured is connected back to the other of the comparators inputs. The time constant of the parallel RC circuit is an inverse function of the error included in the output of the high input impedance circuit during an interval separating two peak values. The invention is particularly useful to indicate very accurately the state of discharge of lead-acid power batteries.
REFERENCES:
patent: 3564287 (1971-02-01), Todd
patent: 3743950 (1973-07-01), Sellari et al.
patent: 4295097 (1981-10-01), Thompson et al.
Jaeger
Tokar Michael J.
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