Linear variable inductor in DC current sensors utilized in telecom solar battery chargers

The author describes an LVI (linear variable inductor) current sensor proposed for high-reliability solar-powered telecommunication battery chargers. Its design principle and implementation are discussed. In the proposed LVI sensor, high sensitivity at low current has been achieved by applying a prepolarization field to the sensor core structure. This sensor is shown to be superior to the other possible candidates with respect to the decisive qualities in the particular application considered, i.e. simplicity, reliability, high efficiency, and low cost.<
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