[Technology] Designed a drive circuit for ultrasonic transducers.

I designed a drive circuit for an ultrasonic transducer.
The drive circuit for the ultrasonic transducer using LC resonance was designed for the purpose of cleaning pores and skin impurities with ultrasound.
It is driven by an H-bridge circuit method, and the switching frequency can be varied in the range of 20 to 40 kHz.
Additionally, it is equipped with an auto-tuning function that automatically adjusts the maximum resonance frequency by detecting the peak value of the driving current through a peak hold circuit.

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