多頻驅動單一換能器之超音波系統及訊號產生裝置

The present invention provides an ultrasonic system of a single transducer driven with multiple frequencies and signal-generation device. The ultrasonic system comprises plural driving modules, a coupling circuit, and a transducer. Each driving module outputs signals with different frequencies respectively. The coupling circuit is electrically connected to the driving modules to couple each signal with a different frequency into a driving signal carrying the frequency. The transducer receives the driving signal carrying the frequencies, and converts the electrical energy into the mechanical energy. Since it requires only one transducer to generate the multi-frequency ultrasonic wave by the ultrasonic system of a single transducer driven with multiple frequencies in the present invention, the cost requiring plural transducers is saved and it has a better acoustic cavitations effect compared to the prior art.