Signal amplifying circuit for an MR element

摘要

A signal amplifying circuit for an MR element in which a first terminal of a selected MR element is connected to input of an amplifier through a first resistor as well as to a second input of the amplifier through a second resistor, and a second terminal of the MR element is connected to the input of the amplifier through a capacitor. The effect of an offset voltage generated in the MR element can be suppressed to minimum with a simple configuration.