antknee
New Member
I have an ultrasonic atomiser. You can see a picture of it above, you vibrate it at its resonant frequency and some mist appears. It has three parts, 1) pzt, which will vibrate 2) a steel ring upon which the pzt is glued and 3) a central foil with holes, which is glued to the steel ring and which will throw out liquid as mist.
The whole unit has a static capacitance of 1.8nF. When I take the pzt off the steel and measure the pzt capacitance alone, it is 0.2nF. When I glue the pzt back on the capacitance stays at 0.2nF...I've glued the pzt back on with conducting paint and superglue but the capacitance stays at 0.2nF.
My questions are: Was the original glue some kind of dielectric? I'm not sure what is going on exactly. Is it possible to buy dielectric glue?
Regards,
Antknee.