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This paper numerically studies the inrush current phenomenon in a DC-DC converter with isolating transformer. It uses Jiles-Atherthon method to model magnetic core used in isolating transformer. Due to fast change of switching duty-cycle to suit the load change, magnetic core experiences a large change of flux density, thereby inducing a large inrush current, though the operating point of the magnetic...
In this study, a piezoelectric transformer operating at the thickness shear vibration mode and with dual or triple outputs is proposed. It consists of a lead zirconate titanate (PZT) ceramic plate with a high mechanical quality factor Q/sub m/ and a size of 120 /spl times/ 20 /spl times/ 4 mm/sup 3/. The PZT ceramic plate is poled along the width direction. The electrodes of input and output parts...
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