In this study, microstructural and piezoelectric characteristics of PNW-PMN-PZT ceramics manufactured using attrition milling method were investigated. Sintering temperature of the ceramics was varied from $1080^{circ}C$ to $1240^{circ}C$. With increasing sintering temperature, dielectric constant increased. In the specimen sintered at $1120^{circ}C$, electromechanical coupling factor(Kp) and density showed the maxinum values of 0.546 and 7.78[$g/ extrm{cm}^3$], respectively. In the specimen sintered at $1160^{circ}C$, mechanical quality factor(Qm) also showed the maxinum value of 1,943. Contour vibration mode piezoelectric transformer with the size of $27.5{ imes}27.5{ imes}2.5mm$ using PNW-PMN-PZT ceramics was manufactured and its driving characteristics for T5 fluorescent lamp was investigated. Taking into consideration temperature rise of 6.8[$^{circ}C$] and efficiency of 98.23%, it can be concluded that the transformer is suitable for driving the T5 fluorescent lamp.