Device for low-power current detection
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United States of America Patent
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Issued Date -
Sep 5, 2002
app pub date -
Feb 26, 2002
filing date -
Mar 1, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention concerns a device for low-power current detection by means of a shunt resistor (R.sub.shunt) generating a shunt voltage, with an amplifier network, implemented to amplify the shunt voltage into a measurement voltage, having a first nullator-norator combination (N.sub.1, /N.sub.1) wired as an amplifier, with a second nullator-norator combination (B.sub.2) being connected in series upstream from the first nullator-norator combination in the direction of the shunt resistor in such a way that the first nullator and the second nullator are operated in a feedback loop and non-linearity of the first nullator is corrected by an opposing behavior of the second nullator, with a feedback signal for the second nullator-norator combination being picked up at the output of the first nullator-norator combination.
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