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Circuit configuration for a gradometric current sensor with a bridge circuit for measuring gradients of magnetic field strength and a sensor equipped with this circuit configuration
Circuit configuration for a gradometric current sensor with a bridge circuit for measuring gradients of magnetic field strength and a sensor equipped with this circuit configuration
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机译:具有用于测量磁场强度梯度的桥式电路的梯度电流传感器的电路配置以及配备有该电路配置的传感器
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摘要
In order to create a circuit configuration for a gradiometric current sensor with a bridge circuit in the form of a Wheatstone bridge for measuring gradients of the magnetic field strength of a current-carrying conductor, with four magnetoresistive resistors, two of which resistors form a sub-bridge in each case, while the sub-bridges are arranged symmetrically in relation to sub-conductors of the current-carrying conductor, and with a compensating circuit associated with the bridge circuit, which compensating circuit comprises compensating conductors associated with the magnetoresistive resistors, to which compensating conductors a compensating current can be applied, by means of which circuit configuration mounting tolerances can be compensated in a simple manner, it is provided that the sub-bridges (22, 24) can each have a separate compensating current (Icomp1, Icomp2) applied to them.
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