Piezoelectric transformer and strobe apparatus having the piezoelectric transformer
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United States of America Patent
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Apr 19, 2005
Grant Date -
Jun 5, 2003
app pub date -
Oct 24, 2002
filing date -
Oct 25, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Of a plurality of surfaces forming its shape, a piezoelectric transformer 13A has two types of output electrodes 22 and 23 on one surface in the longitudinal direction and two opposing surfaces in the lateral direction. This piezoelectric transformer 13A can be driven by properly switching first and second resonance modes different from each other. In a strobe apparatus, a discharge capacitor 3 is charged by a voltage generated in the output voltage 23 when the piezoelectric transformer 13A is driven in the first resonance mode, and a discharge tube 4 is triggered by a voltage generated in the output electrode 22 when the piezoelectric transformer 13A is driven in the second resonance mode.
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