How to analyze electrical impedance properties of piezoelectric sensors

In this webinar, I (1) review piezo sensor equations (2) describe how to analyze piezo voltage when external circuits are applied and (3) describe voltage and charge amplifier circuits used to stabilize and amplify the sensor output.
Here is a link to the presentation notes: www.ultrasonica...
This webinar was sponsored by PI Ceramic Technology. Learn more about their piezo ceramic products at this link: www.piceramic....
Learn about my ultrasonic transducer consulting services here: www.ultrasonic...
Here is a link to sign up for my next weekly webinar: www.ultrasonic...

[@ats89117]

Interesting as always. I am always surprised to see the single JFET amplifier used for electret microphones when a cascode arrangement is clearly called for due its reduced Miller capacitance. I guess the small increased cost implications for the added JFET and biasing resistors are the problem...