| 摘要 |
<p>An insulation piezoelectric transformer, with two pairs of electrodes, with upper electrodes (21,31) and lower electrodes (22,32) are respectively formed on the upper surface (11) and lower surface (12) of a ceramic substrate (10) to form the primary side and the secondary side. A high DC voltage is applied to the primary side and the secondary side to polarize the ceramic material in between the upper and lower electrodes. The unpolarized portion of substrate still keeps the properties of a ceramic material and functions as an insulator between the primary and secondary sides. The piezoelectric transformer thereby functions as an insulation piezoelectric transformer useful for high power and high frequency applications such as LCD backlight modules in drivers for a CCFl, Cold Cathode fluorescent lamp, computers etc.</p> |
