Electrical Characteristics of Piezoelectric Transformer using Low Temperature Sintering PCW-PMN-PZT Ceramics

In this study, piezoelectric transformer was manufactured at the sintering temperature of , and then the feasibility of application to low temperature sintering piezoelectric transformers was investigated by evaluating the electrical characteristics of it. The voltage ratio of piezoelectric transformer showed the maximum value at the resonant frequency of input part, and increased according to the increase of load resistance. The output power and efficiency of piezoelectric transformer showed the superior properties when the output impedance of it coincides with the load resistance. Piezoelectric transformer manufactured at the low temperature of showed the heat generation less than at the output power of 30 W, and stable driving characteristics.