Electricity: measuring and testing – Magnetic – Magnetometers
Reexamination Certificate
2006-05-02
2006-05-02
Ledynh, Bot (Department: 2862)
Electricity: measuring and testing
Magnetic
Magnetometers
C324S251000, C324S252000, C327S511000
Reexamination Certificate
active
07038447
ABSTRACT:
A sensor circuit includes a sensor element, a current source for supplying an operating current for the sensor element and an amplifier circuit for amplifying a sensor voltage produced by the sensor element when applying the operating current, wherein the amplifier circuit has a resistor influencing the amplification of it. The resistor of the amplifier current and the sensor element are formed equally as regards technology so that variations, due to technology, of the sensor sensitivity of the sensor element are counteracted by an amplification factor of the amplifier circuit changing in the opposite way.
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Greenberg Laurence A.
Ledynh Bot
Locher Ralph E.
Stemer Werner H.
Whittington Kenneth J.
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