KMZ50

The KMZ50 is an extremely sensitive magnetic field sensor, employing the magnetoresistive effect of thin-film permalloy. The sensor contains one magnetoresistive Wheatstone bridge and integrated set/reset conductors.

With the integrated set/reset conductor the orientation of sensitivity may be set or changed (flipped). A short current pulse on this conductor is needed to recover (set) the  sensor after exposure to strong disturbing magnetic fields.

A negative current pulse of KMZ50 will reset the sensor to reversed sensitivity. By use of periodically alternated flipping pulses  and a lock-in amplifier, output will become independent of sensor and amplifier offset.