I have some piezo's and some pzt. I'd like to be able to determine their in built impedance, how would I do that?
Essentially PZT is a mechanical system that has an electrical equivalent. I've attached a pic of their circuit. (Courtesy Unclejed, I believe he is also working on an impedance analyser circuit.)
**broken link removed**
A commercial impedance analyser would cost a lot of money I believe, but what they can do is scan through a range of frequencies of the pzt and you find at their resonant frequency the impedance is least. So essentially I'm looking to calculate the impedance of a given piezo/pzt at resonance. It might be useful to determine from that what the resonant frequency of a given piezo is.
Any thoughts?