40Друкована плата ультразвукового блоку живлення кхц 120 Вт для ванни з ультразвуковим очищувачем

The feedback circuit is used for detecting the power, frequency and resistance of the ultrasonic transducer, and transmitting the detected power, frequency and resistance to the signal generator. By setting the feedback circuit, the invention realizes automatic tracking stability to ensure the stability of the ultrasonic energy of the ultrasonic transmitting device