Loading patent…
AssigneeHioki E.E. Corporation
InventorsYuki Karasawa, Kenta Ikeda, Koki Nakazawa, Peiyu Xia, Kimihiko Yamagishi
Estimating the term…
An excitation circuit includes a first operational amplifier that supplies a first excitation current to a first coil constituting a first flux gate, and a second operational amplifier that supplies a second excitation current to a second coil constituting a second flux gate. The excitation circuit further includes a signal generation circuit that generates input signals for the first operational amplifier and the second operational amplifier. The signal generation circuit includes a third operational amplifier that generates an inverted voltage or a non-inverted voltage based on an AC excitation voltage for exciting the pair of flux gates as an input signal for the first operational amplifier, and a fourth operational amplifier that generates an inverted voltage or a non-inverted voltage based on the AC excitation voltage as an input signal for the second operational amplifier.
An excitation circuit exciting a pair of flux gates for detecting a physical quantity of a measurement object, the excitation circuit comprising:
Dependencies are inferred from the claim text.