| 摘要 |
A piezoceramic converter for high power applications is built with a piezoceramic transformer and a pulse-synchronized electronic feedback circuit. The piezoceramic transformer is designed in the form of a square or circular piezo plate, polarized in thickness direction and excited in contour extensional mode in order to handle high power. A pulse-synchronized electronic feedback circuit is incorporated to stabilize output voltage and current under varying loading conditions. Frequency programming elements, a resistor and a capacitor are built into the control circuit to set an operating frequency of the piezoceramic transformer.
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