| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power supply with a piezoelectric transformer and a method for power conversion, using a piezoelectric transformer. <P>SOLUTION: A proposed power supply is a DC/DC boosting piezoelectric converter, including a piezoelectric transformer 24 and controls a resonance frequency of the piezoelectric transformer 24. The piezoelectric transformer 24 is connected to a power supply 28 which is connected to an oscillator circuit 30 and the oscillator circuit 30 controls a sinusoidal voltage 26, which drives the piezoelectric transformer 24. The power supply 28 is connected to a feedback circuit 32 having a phase shift circuit network and constitutes the feedback circuit for controlling a frequency. An output terminal of the piezoelectric transformer 24 is connected to a voltage multiplier circuit 34, and an output voltage controller 36 is connected to an output terminal of the voltage multiplier circuit 34 to output a DC voltage. <P>COPYRIGHT: (C)2011,JPO&INPIT |
