Electrical resistors – Resistance value responsive to a condition – Magnetic field or compass
Reexamination Certificate
2006-05-16
2006-05-16
Hoang, Tu (Department: 2832)
Electrical resistors
Resistance value responsive to a condition
Magnetic field or compass
C338S03200R, C252S516000
Reexamination Certificate
active
07046117
ABSTRACT:
An integrated signal isolator is provided to isolate first and second circuits. First, second, third, and fourth magnetoresistors of the isolator are coupled together so as to form a Wheatstone bridge. The first second, third, and fourth magnetoresistors are arranged so that the Wheatstone bridge is immune to uniform external magnetic fields having any direction. An input strap generates magnetic fields across the first, second, third and fourth magnetoresistors in response to a signal from the first circuit so that the Wheatstone bridge provides an output to the second circuit that is commensurate with the signal from the first circuit.
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Hoang Tu
Honeywell International , Inc.
Schiff & Hardin LLP
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