Which EMC (electromagnetic compatibility) devices are helpful for the design and modification of ultrasonic scalpels?

The ultrasonic scalpel EMC design focuses on the ultrasonic generator. The power output line supplying power to the transducer should be shielded and as short as possible. A matching inductor can be connected in series with a tuning capacitor in parallel between the power amplifier output and the transducer. This achieves impedance matching, improves efficiency, and also filters out higher harmonics to some extent. The DC high-voltage power supply inside the generator, which powers the power amplifier, should use a large-capacity electrolytic capacitor for smoothing after its rectifier bridge, and a differential-mode inductor may be added. The digital and power sections of the control circuit should be separated, and optocouplers should be used for isolation at the interfaces.