We have an old ultrasonic which we have run through a variac for
years with no problems. I'm not sure of the brand and "your  mileage
may vary", but it does works.
>



>  I'm looking for a tabletop ultrasonic cleaner with adjustable power: I
>tried to look on the web but I couldn't find many of those. Can anyone

--

  - Jim Beall 303-497-5989
    beall@boulder.nist.gov