I have learned that with out a load in the tank the output current increases making the heat sink hotter.
Should have had the tank full of water.
Does this ring true for anyone?
Being an electronics technician since 1967 and having worked on a lot of high frequency stuff, I really cannot see anyway that could be true. Transducers are in practical terms simply a speaker albeit generally using a ceramic disc as the driven element rather than a coil of wire. I cannot conceive of a change in load causing a change in current unless there is an electrical circuit between the ceramic and the metal of the tank that could slightly change the capacitance and even then I would consider it highly unlikely. Is there electrical contact between either of the terminals and the body of the transducer?
