| 摘要 |
The invention relates to a circuit arrangement for generating high-frequency oscillations which are preferably within the ultrasonic range, by using a transformer, the secondary side of which drives a preferably piezo-ceramic vibrator (2) as resonant circuit. To achieve, among other things, also a transmission with lower loss, it is proposed to provide a single transformer (1) and to provide as feedback a circuit (3) on the primary side of the transformer with a switching element (4) which feeds the high frequency power with the resonant frequency of the resonant circuit into the transformer (1). <IMAGE>
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