Re: how to transfer energy through the metal wall ??

Hi Va1erian,

> The piezo sound transducers sold by e.g. Farnell or RS Components seem
> to be not powerful enough. I saw on the Internet the high-power
> ultrasound transducers used in metal welding, but I do not know where
> to get the piezo ceramic devices itself.

you could ask the manufacturers of ultrasonic cleaners.

Michael