Hello,
I'm involved in experimental study of Single Bubble Sonoluminescence. I'm using function waveform generator with piezoelectric transducers to produce ultrasound standing wave in my resonator. To achieve a standing wave there's a need to have current and voltage in a phase. For this purpose I use a coil with movable core. The problem is magnetic field producted with coil, and that I have to manually move the core each time the frequency is changed. I wonder if there is a possibility to build by myself or to buy some apparatus which will be able of providing variable inductance. It would be best if programmable or automatic. Thanks a lot for any hints.
Ivan
I'm involved in experimental study of Single Bubble Sonoluminescence. I'm using function waveform generator with piezoelectric transducers to produce ultrasound standing wave in my resonator. To achieve a standing wave there's a need to have current and voltage in a phase. For this purpose I use a coil with movable core. The problem is magnetic field producted with coil, and that I have to manually move the core each time the frequency is changed. I wonder if there is a possibility to build by myself or to buy some apparatus which will be able of providing variable inductance. It would be best if programmable or automatic. Thanks a lot for any hints.
Ivan