ON THE DEVELOPMENT OF A LOW-COST, TRANSFORMER-ISOLATED VOLTAGE PROBE FOR DIFFERENTIAL MEASUREMENTS

摘要

The development of a transformer-isolated voltage probe for differential measurement is reported in this paper. It is simple to design and implement. It is a low-cost alternative for isolated measurement of differential signals. Optimum passive damping is described for the resonant circuit composed of magnetizing inductance of transformer and the dc blocking capacitor. The prototype development and experimental results on a full-bridge resonant converter demonstrate the effectiveness of this technique.