| http://www.w3.org/ns/prov#value | - Furthermore, in the same way as in Embodiments 1, 2, 3, 6, 7, and 8, it also is possible to set the driving frequency and the input voltage of the piezoelectric transformer through software by using a microcomputer, a peripheral apparatus such as a data storage device (e.g., memory) and the like, instead of setting them by the driving frequency control circuit 10 and the input power control circui
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