BROADBAND HIGHLY SENSITIVE VARIABLE MAGNETIC FIELD SENSOR Russian patent published in 2021 - IPC G01R33/24 

FIELD: measuring technology.

SUBSTANCE: invention relates to measuring technology. The essence of the invention lies in the fact that the broadband highly sensitive sensor of variable magnetic fields further comprises a compensation measurement circuit consisting of a follower, a high-pass filter, an operational amplifier, a feedback resistance and a feedback coil. The adder output is connected in parallel to the follower and the high-pass filter of the compensation measurement circuit, and their outputs are connected to the input of the operational amplifier loaded on a chain of series-connected feedback resistance and feedback coil. The output signal is taken from the output of the high-pass filter.

EFFECT: compensation of the constant component of the signal at the output of the device.

1 cl, 2 dwg