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A new method for driving a longitudinal piezoceramic radiator providing separation of electric and acoustic resonance of the radiator using effects of both resonances is described. Electrical processes were modeled in a longitudinal piezoceramic radiator using the proposed method. The study showed effectiveness of applying the method to increase the load capacity of the speaker system, increase the operational stability of the radiator, and expand functional potential of ultrasonic medical devices when working in wide-range technical load.