The circuit is simplicity itself, just an astable of the type that has made a billion beepers and flashing LEDs. It drives two ultrasonic ... the frequency to the transducer resonance, but that ...
Those go to a circuit board he designed which ... Or you could use a larger transducer to make an affordable ultrasonic soldering iron.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results