I hosted a webinar on December 9, 2022 on

"How to calculate the equivalent circuit for an ultrasonic transducer from impedance"

You can watch the recording on my YouTube Channel here: 

https://youtu.be/wpi6bnDQePI

Here is a link to the presentation notes and excel calculations.

Topics

In this webinar, I go step by step and use impedance to calculate the equivalent circuit of an ultrasonic transducer. I talk about theory and practical calculations.

Here is the outline of the webinar.

• 1:47 - Outline
• 2:20 - What is the equivalent circuit?
• 8:10 - Physical dynamics and ultrasonic impedance response
• 13:40 - Why use the equivalent circuit?
• 23:22 - Outline of how to calculate equivalent circuit
• 25:00 - Experimental setup
• 26:00 - Capacitance calculation - Ct
• 27:27 - Resonance and anti-resonance measurement
• 29:15 - Calculation of R1
• 30:50 - Calculation of quality factor Q
• 35:10 - Calculation of C1
• 36:00 - Calculation of C0
• 37:00 - Coupling factor keff from C1, C0, and Ct
• 39:20 - Calculation of L1
• 41:22 - Using keff to calculate equivalent circuit properties - alternative method
• 43:00 - Excel calculations of R1, L1, C1, C0 and impedance response

***Announcement***

My next webinar will be 11AM ET - January 13, 2023  "Making real conclusions: analyzing ultrasonic transducer measurements with relevant statistics [Topic may change based on feedback]"

Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar