Hiroshi Nakatsuka

Piezoelectric resonator, filter, and duplexer

Thin film bulk acoustic resonator, method for producing the same, filter, composite electronic component device, and communication device

Drive device and drive method for a cold cathode fluorescent lamp

Driving circuit for piezoelectric transformer, cold-cathode tube light-emitting apparatus, liquid crystal panel and device with built-in liquid crystal panel

Coupled FBAR filter

Method and unit for driving piezoelectric transformer used for controlling luminance of cold-cathode tube

Acoustic resonator and filter

Piezoelectric Resonator, Piezoelectric Filter, and Duplexer and Communication Device Using the Same

Piezoelectric transformer, piezoelectric transformer drive circuit, piezoelectric transformer drive method and cold cathode tube drive apparatus using piezoelectric transformer

Method of driving a piezoelectric transformer and power source apparatus using the same