| 摘要 |
A piezoelectric transformer driving apparatus and a piezoelectric transformer driving method, wherein even if there exists a variation between piezoelectric transformers, no unnecessary resonant points occur in the vicinity of a frequency used, that is, the output is stable for the frequency. For this purpose, the primary electrodes ( 1 b, 2 a) of a pair of piezoelectric transformers ( 1, 2 ) that exhibit potentials of mutually different signs on their respective secondary sides are connected to each other, while the piezoelectric transformers ( 1, 2 ) are connected in series with an AC power supply. An input voltage is applied between the primary electrodes ( 1 a, 2 b), and the outputs are supplied to a load, whereby even if there exists a variation between the vibrations of the piezoelectric transformers, it results in only a single resonant point existing.
|
