A dual-output magnetoelectric gyrator

A novel dual-output magnetoelectric (ME) gyrator operating in an acoustic resonance mode and based on a Pb(ZrxTi1-x)O-3 (PZT)/Metglas/PZT (P-M-P) trilayer structure is discussed. The dual-output with different current-to-voltage I-V) conversion ratios and different voltage levels result from the use of piezoelectric layers with different thicknesses as the output capacitive port. Under open circuit conditions, the maximum I-V conversion ratios of the two outputs were 5.7 and 13.5 kV A(-1) at a frequency of 50.4kHz. A high power efficiency (eta) of 91.7% was achieved and remained relatively stable (>= 86%) under increasing power drive to a power density of 45 W in(-3). These excellent power transfer and multi-output characteristics offer unique possibilities for possible use of ME gyrators in modern power electronic devices.