The digital signal processor of the low-power ultrasonic cleaning power circuit board obtains the output voltage of the ultrasonic transducer according to the voltage feedback circuit, and obtains the output current of the ultrasonic transducer according to the current feedback circuit; And comparing the obtained output voltage and the output current according to the pre stored electrical parameters required for the operation of the ultrasonic transducer, and correcting the control signal according to the comparison results.
| Model | Power（W） | Frequency (khz) | Operating voltage | Maximum output current |
| PU-XLB50W | 50 | 25khz,28khz,33khz,40khz | AC110V/220V | 0.33A |
| PU-XLB100W | 100 | 25khz,28khz,33khz,40khz | AC110V/220V | 0.45A |
| PU-XLB150W | 150 | 25khz,28khz,33khz,40khz | AC110V/220V | 0.65A |
