Multi-load piezoelectric transformation circuit driver module
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United States of America Patent
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-
Apr 20, 2004
Grant Date -
Dec 4, 2003
app pub date -
May 30, 2002
filing date -
May 30, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multi-load piezoelectric transformation circuit driver module consists of at least one pair of piezoelectric ceramic transformers and one load connecting to each piezoelectric ceramic transformer. Each pair of voltages of the same phase are input to a pair of input ends which have opposite polarization, or the two piezoelectric ceramic transformers group have input ends of opposite polarization or its group assembly output an even number of voltages with opposite phases to input ends of the loads which the feedback ends coupled together in series. When driven by piezoelectric transformation circuit, due to opposite polarization, output a pair of voltages of opposite phases can obtain improved characteristics such as even current, greater output power and better matching impedance. And a single driver circuit can actuate multiple sets of loads simultaneously in a stable fashion.
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