Self Oscilating Transformer-Based Current Transducer

This article presents a current sensing circuit applied to various power electronics applications: invertors, DC power supplies, power factor correction units, etc. This circuit is based on the Faraday's Law and works in self oscillating mode. Therefore it is possible to measure both AC and DC current with this transducer. A wide bandwidth, extended temperature range and galvanic isolation are the main advantages of the developed appliance.