Ultrasonic Transducer Product Development Consulting
Monthly Ultrasonic Webinar
Monthly Webinar on Ultrasonic Transducers
hosted by Husain Shekhani, PHD
February 26, 2024 Webinar
The topic of my next webinar will be
“Electrical Drive system for Ultrasonic R&D work”
It will be on Monday, February 26, 2024 at 11AM EST. It will be hosted over Zoom. Here is the link to register:
LINK
Monthly Schedule - 2024
Friday 11am EST on the following days
- January 26
- February 26 (Monday)
- March 29
- April 26
- May 31
- June 28
Webinar Sponsor
PI Ceramic (Click the logo or the link here to visit their website)
- Over 30 years’ experience, broad product range of piezoelectric components, actuators, and ultrasonic transducers
- Complete manufacturing and process control from the raw materials to final QC & delivery
- Several “soft” and “hard” PZT formulations, plus lead-free materials.
- Customer specific solutions with the capability to manufacture small R&D batches to high-capacity output of millions of units.
- Dimensions, frequency, electrode material & configuration, sub-assembly integration, wiring and flex circuit.
- Tremendous batch to batch consistency and reliability
Previous Webinars
I hosted a webinar on January 26, 2024 on " Everything you need to know about designing and assembling power ultrasonic transducers " You can watch the recording on my YouTube Channel here: https://youtu.be/oAMjCGBXYms Here is a link to the pdf of the presentation notes: Webinar 24 - everything power transducers.pdf Summary In this webinar I gave a "catch-all" presentation on bolt-clamped ultrasonic power transducer. Specifically, I discussed: -How to design a power ultrasonic transducer (bolt-clamped) -How to assembly the transducer - How to test the transducer *** Announcement *** My next webinar will be on Friday, February 23, 2023 at 11AM EST. I will cover "How to determine to determine the requirements of your transducer application using an R&D electrical driver” (Topic will change based on LinkedIn poll to come) Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar
I hosted a webinar on December 29, 2023 on " What happens to displacement at the antiresonance frequency of an ultrasonic transducer " You can watch the recording on my YouTube Channel here: https://youtu.be/Zj9fXkaEADw Here is a link to the pdf of the whiteboard notes: Webinar 23 antiresonance displacement.pdf Here is a link to the Waveforms workspace file: webinar23_wvforms_displacement.dwf3work Summary Using a laser doppler vibrometer, I demonstrate that the mechanical displacement is not affected by the antiresonance phenomenon of ultrasonic transducers. In this webinar, I show experiments and talk about theory. I also talk about mechanical antiresonance. *** Announcement *** My next webinar will be on Friday, January 5, 2023 at 11AM EST. I will cover "How to measure the accuracy and linearity of an laser doppler vibrometer for ultrasonic transducers” Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar
How to use multiple transformers to increase voltage and power delivered to an ultrasonic transducer
I hosted a webinar on December 15, 2023 on " How to use multiple transformers to increase voltage and power delivered to an ultrasonic transducer " You can watch the recording on my YouTube Channel here: https://youtu.be/Xb8JaKivXzw Here is a link to the pdf of the whiteboard notes: Webinar22_double_transformers pdf Summary In this webinar, I (1) Describe the use cases of using 2 or more transformers (2) Demonstrate voltage doubling using two off the shelf transformers *** Announcement *** My next webinar will be on Friday, December 29, 2023 at 11AM EST. I will cover "What is the difference in vibrometer measurements of an ultrasonic transducer at anti-resonance and at resonance” Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar
I hosted a webinar on December 8, 2023 on " How to make Impedance Measurements of Ultrasonic Transducers with the Digilent Analog Discovery " You can watch the recording on my YouTube Channel here: https://youtu.be/B8llEdp1X2o Here is a link to the pdf of the whiteboard notes: webinar21_digilent_impedance.pdf Here is a link to the calculation script: analog_discovery_impedance_script.txt Summary In this webinar, I show how to make impedance measurements of ultrasonic transducer with the Digilent Analog Discovery. I go over the following topics: (1) Overview of hardware (2) Settings overview and measuring the accuracy of the measurements (3) Measure impedance response of ultrasonic transducer – like an expert! *** Announcement *** My next webinar will be on Friday, December 15, 2023 at 11AM EST. I will cover "How to use two transformers to double voltage gain in an ultrasonic transducer drive circuit” Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar
I hosted a webinar on November 24, 2023 on " How to measure the d33 coefficient of a piezo ceramic by applying a force and measuring a voltage " You can watch the recording on my YouTube Channel here: https://youtu.be/xvy5jdbIEQQ Here is a link to the pdf of the whiteboard notes: Webinar 20 notes - custom 10x probe Summary In this webinar, I describe the theory of a 10x probe and practically how to make your own very simple 10x probe that does not require any compensation. This is super useful for ultrasonic and audio work. *** Announcement *** My next webinar will be on Friday, December 1, 2023 at 11AM EST. I will cover "How to make impedance measurements of ultrasonic transducers using the Diligent Analog Discovery” Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar
I hosted a webinar on November 17, 2023 on " How to measure the d33 coefficient of a piezo ceramic by applying a force and measuring a voltage " You can watch the recording on my YouTube Channel here: https://youtu.be/iOslucScEik Here is a link to the pdf of the whiteboard notes: Webinar 19 d33 notes Here is a link to the finalized code, which measures voltage and converts it into MPa with the needed inputs: Webinar18_ads1115_20231110122622.zip Summary In this webinar, I show how to use an Arduino and the ADS1115 ADC to measure preload voltage of a transducer with high impedance impedance. I have a long discussion about using the ADS1115. I talk about theory, using the ADS1115, and show live demo and the Arduino code. *** Announcement *** My next webinar will be on Friday, November 17, 2023 at 11AM EST. I will cover "How to measure the d33 coefficient of a piezo crystal using a known applied force” Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar
I hosted a webinar on November 10, 2023 on " How to use an Arduino to measure preload voltage of ultrasonic transducer and convert to stress " You can watch the recording on my YouTube Channel here: https://youtu.be/EIgjLZQjZQw Here is a link to the pdf of the whiteboard notes: Webinar 18 notes Here is a link to the finalized code, which measures voltage and converts it into MPa with the needed inputs: Webinar18_ads1115_20231110122622.zip Summary In this webinar, I show how to use an Arduino and the ADS1115 ADC to measure preload voltage of a transducer with high impedance impedance. I have a long discussion about using the ADS1115. I talk about theory, using the ADS1115, and show live demo and the Arduino code. *** Announcement *** My next webinar will be on Friday, November 17, 2023 at 11AM EST. I will cover "How to measure the d33 coefficient of a piezo crystal using a known applied force” Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar
I hosted a webinar on November 3, 2023 on " Preload measurement circuit for bolt-clamped ultrasonic Langevin transducers " You can watch the recording on my YouTube Channel here: https://youtu.be/rYcdf0nxfG0 Summary In this webinar, I show how to modify a multimeter to create a Giga-Ohm input impedance for measuring voltage. Why do this? To create a super stable voltage measurement for measuring transducer preload voltage. *** Announcement *** My next webinar will be on Friday, November 10, 2023 at 11AM EST. I will cover "Using an Arduino/microcontroller to measure transducer preload voltage and convert it into MPA/stress” Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar
I hosted a webinar on October 27, 2023 on " Preload measurement circuit for bolt-clamped ultrasonic Langevin transducers " You can watch the recording on my YouTube Channel here: https://youtu.be/3DMhhIglg0o Here is a link to the presentation notes. Here is a link to the preload calculator that I use during the webinar: Preload Calculator Topics In this webinar recording, I show how to measure the preload of an ultrasonic transducer stack transducer using a simple circuit and a multimeter. I provide calculations and a real demonstration. Video outline 0:29 - Outline of webinar 1:50 - Bolt-clamped transducer components 3:00 - Introduction to my consulting work 9:32 - Why do we preload? 12:52 - Preloading measurement method comparison 17:30 - How to determine the required preload 25:00 - Theory of voltage to preload using a film capacitor circuit 30:00 - 5 benefits of using a film capacitor circuit for charge measurement 35:00 - Introduction to my prestress calculator 37:30 - Choosing a capacitor and time constant 41:30 - Options to measure preload voltage 42:56 - The exact capacitor I recommend 44:00 - Walkthrough of loosening and fastening a transducer and measuring preload voltage and torque 46:22 - Calculation of stress from transducer used in demonstration 47:25 - Weekly webinars on preloading 48:00 - Questions *** Announcement *** My next webinar will be on Friday, November 3, 2023 at 11AM EST. I will cover "High Impedance Multimeter Modification for Ultrasonic Transducer Preload Measurement” Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar
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
See you at the next webinar!
Let’s talk about your project!
Have a question or comment? Email me.
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husain@
ultrasonicadvisors.com
Ultrasonic Advisors LLC © 2023
Detroit, MI, USA
I hosted a webinar on January 26, 2024 on " Everything you need to know about designing and assembling power ultrasonic transducers " You can watch the recording on my YouTube Channel here: https://youtu.be/oAMjCGBXYms Here is a link to the pdf of the presentation notes: Webinar 24 - everything power transducers.pdf Summary In this webinar I gave a "catch-all" presentation on bolt-clamped ultrasonic power transducer. Specifically, I discussed: -How to design a power ultrasonic transducer (bolt-clamped) -How to assembly the transducer - How to test the transducer *** Announcement *** My next webinar will be on Friday, February 23, 2023 at 11AM EST. I will cover "How to determine to determine the requirements of your transducer application using an R&D electrical driver” (Topic will change based on LinkedIn poll to come) Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar
I hosted a webinar on December 29, 2023 on " What happens to displacement at the antiresonance frequency of an ultrasonic transducer " You can watch the recording on my YouTube Channel here: https://youtu.be/Zj9fXkaEADw Here is a link to the pdf of the whiteboard notes: Webinar 23 antiresonance displacement.pdf Here is a link to the Waveforms workspace file: webinar23_wvforms_displacement.dwf3work Summary Using a laser doppler vibrometer, I demonstrate that the mechanical displacement is not affected by the antiresonance phenomenon of ultrasonic transducers. In this webinar, I show experiments and talk about theory. I also talk about mechanical antiresonance. *** Announcement *** My next webinar will be on Friday, January 5, 2023 at 11AM EST. I will cover "How to measure the accuracy and linearity of an laser doppler vibrometer for ultrasonic transducers” Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar
How to use multiple transformers to increase voltage and power delivered to an ultrasonic transducer
I hosted a webinar on December 15, 2023 on " How to use multiple transformers to increase voltage and power delivered to an ultrasonic transducer " You can watch the recording on my YouTube Channel here: https://youtu.be/Xb8JaKivXzw Here is a link to the pdf of the whiteboard notes: Webinar22_double_transformers pdf Summary In this webinar, I (1) Describe the use cases of using 2 or more transformers (2) Demonstrate voltage doubling using two off the shelf transformers *** Announcement *** My next webinar will be on Friday, December 29, 2023 at 11AM EST. I will cover "What is the difference in vibrometer measurements of an ultrasonic transducer at anti-resonance and at resonance” Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar
I hosted a webinar on December 8, 2023 on " How to make Impedance Measurements of Ultrasonic Transducers with the Digilent Analog Discovery " You can watch the recording on my YouTube Channel here: https://youtu.be/B8llEdp1X2o Here is a link to the pdf of the whiteboard notes: webinar21_digilent_impedance.pdf Here is a link to the calculation script: analog_discovery_impedance_script.txt Summary In this webinar, I show how to make impedance measurements of ultrasonic transducer with the Digilent Analog Discovery. I go over the following topics: (1) Overview of hardware (2) Settings overview and measuring the accuracy of the measurements (3) Measure impedance response of ultrasonic transducer – like an expert! *** Announcement *** My next webinar will be on Friday, December 15, 2023 at 11AM EST. I will cover "How to use two transformers to double voltage gain in an ultrasonic transducer drive circuit” Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar
I hosted a webinar on November 24, 2023 on " How to measure the d33 coefficient of a piezo ceramic by applying a force and measuring a voltage " You can watch the recording on my YouTube Channel here: https://youtu.be/xvy5jdbIEQQ Here is a link to the pdf of the whiteboard notes: Webinar 20 notes - custom 10x probe Summary In this webinar, I describe the theory of a 10x probe and practically how to make your own very simple 10x probe that does not require any compensation. This is super useful for ultrasonic and audio work. *** Announcement *** My next webinar will be on Friday, December 1, 2023 at 11AM EST. I will cover "How to make impedance measurements of ultrasonic transducers using the Diligent Analog Discovery” Here is the link to sign up for the upcoming webinar: https://www.ultrasonicadvisors.com/monthly-ultrasonic-webinar