FIELD: measuring residual capacity of lead storage battery. SUBSTANCE: device has series- connected voltage-to-frequency converter, frequency divider, binary-decimal counter, and digital display, as well as current-measuring and ballast resistors and input leads for connecting storage battery. In addition device is provided with switching and controlling members, charge current regulator, null device, logic adder, and matching amplifier. Positive input lead is coupled through series-connected switching and control members, ballast and currentmeasuring resistors with negative input lead for storage battery connection. Switching member output is coupled with first input of null device whose second input is connected to first reference-voltage supply; null-device output is connected to first input of logic adder whose second input is coupled with control-signal source. Logic adder output is connected to control input of switching member. In addition output of matching amplifier is coupled with third input of null device, voltage-to-frequency converter input, and second input of discharge current regulator whose first input is connected to control input of control member, matching amplifier input being connected to negative input lead. EFFECT: enhanced reliability of measurement results, improved safety of storage battery during measurement procedures. 1 dwg
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Authors
Dates
2003-03-27—Published
2001-05-07—Filed