| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric transformer, especially a general-purpose piezoelectric transformer for stepping-down, where a large output is provided by suppressing heat generation. SOLUTION: In (A), undefined form 12A is provided around an internal electrode 12 at random, so a gentle slope is formed at the part as in (C). Thus, concentration of stress is relaxed, suppressing heat generation. Meanwhile in (D), no undefined form 12A is provided around the internal electrode 12, so displacement changes abruptly as in (E). In short, a stress concentrates.
|
