CURRENT MEASUREMENT DEVICE
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United States of America Patent
Stats
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N/A
Issued Date -
N/A
app pub date -
Jul 22, 2014
filing date -
Jul 23, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A current measurement device includes: an integration circuit which integrates the current to be measured, and outputs an integral signal; a low range current measurement unit which receives the integral signal output from the integration circuit and calculates a low range current measurement value that is proportional to the rate of change of the integral signal; a high range current measurement unit which calculates a high range current measurement value based on a pulse signal corresponding to the cycle of the integral signal; a pumping circuit which, using the pulse signal, discharges a charge stored in the integration circuit; and a measurement value determination unit which determines a measurement value of the current to be measured based on the low range current measurement value calculated by the low range current measurement unit, and the high range current measurement value calculated by the high range current measurement unit.
First Claim
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