| 摘要 |
The present invention is a system for cyclically driving an electrical current through at least one non-linear (i.e., saturable) inductor (102) in alternating directions so as to produce a substantially periodic current waveform, and for producing an output signal representative of the current waveform. In one aspect of the invention, the output signal corresponds to the strength of an external magnetic field in the presence of the inductive component. The system includes at least one capacitive node (116) electrically coupled between a voltage source (114) and a system ground (118), for storing electrical energy provided by the voltages source. The energy stored within the system is transferred as electrical current in alternating directions through the inductor (102) via a switching network (108) and a controller (110) for configuring the switching network. The controller allows current to flow in each direction until the inductor saturates. The system further includes a signal processor (112) with an input terminal that is electrically coupled to the inductor, the capacitor, the switching network and the controller.
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