In practical applications, the matching problem between the ultrasonic plastic welding power generator and the ultrasonic transducer also needs to be considered. Due to the fact that the impedance of ultrasonic transducers varies with factors such as frequency and temperature, the power generator needs to have adaptive ability to automatically adjust the output power and frequency according to the impedance changes of the transducer to ensure the best welding effect and quality. In addition, the power generator also needs to have safety protection functions such as overload protection and over temperature protection to ensure the safe operation of the equipment.

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