I have an old large ultrasonic cleaner with 5 ceramic piezo electric transducers (pictured below) epoxied to its tank's underside. They use around 40W of power each.
Newer ultrasonic cleaners, however, use the more massive Langevin transducers as seen here:
What are the differences between these two types of transducers? Also, what are their respective advantages and disadvantages for the application of ultrasonic bath cleaning? Is it worth upgrading my old unit to one that uses the Langevin transducer in terms of more cleaning power?