I hosted a webinar on August 25, 2023 on

"How to use an oscilloscope to make measurements on an ultrasonic transducer system"

You can watch the recording on my YouTube Channel here: 

https://youtu.be/3DMhhIglg0o

Here is a link to the presentation notes.

Topics

In this webinar recording, I demonstrate the most required skill when working with ultrasonic transducers - how to use an oscilloscope. This is practically the only way to measure and interpret ultrasonic transducer performance. Its use is priceless in troubleshooting and design.

Video outline:

• 0:46 - Outline of presentation
• 2:10 - What is an oscilloscope
• 6:48 - Introduction to my consulting work
• 8:20 - USB vs. Bench oscilloscopes
• 15:30 - Overview of probes
• 19:00 -  10x probe options
• 21:00 - 1x probe vs. BNC to clip
• 22:45 - Differential probe options
• 24:50 - Equivalent circuit of a 10x probe
• 26:45 - Compensation capacitor
• 27:00 - Current clamp probe or voltage probe + resistor for current
• 28:30 - Recommended oscilloscopes and probes
• 33:20 - Set up of an oscilloscope
• 35:11 - Measurement set up
• 35:40 - Circuit for resistor current measurement
• 43:15 - Demonstration of the set up of a benchtop oscilloscope
• 49:30 - How to prove an ultrasonic driver circuit
• 54:10 - Set up of Picoscope (4-channel USB oscilloscope) for input DC power and output ultrasonic power measurement for steady state analysis. (RMS voltage, current, and power)
• 59:40 - Set up of Picoscope for transient analysis of ultrasonic signals on a power ultrasonic transducer
  

***Announcement***

My next webinar will be on Friday, September 29, 2023 at 11AM EST. I will cover

"Preload measurement circuit for bolt-clamped ultrasonic Langevin transducers”

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