I hosted a webinar on July 19, 2023 on

"How to wind a transformer for an ultrasonic transducer drive circuit"

You can watch the recording on my YouTube Channel here: 

https://youtu.be/7O_J4rfD_QU

Here is a link to the presentation notes.

Topics

In this webinar recording, I explained the theory, purpose, and process of winding a transformer to achieve more power transfer from a ultrasonic driver to you ultrasonic transducer.

I wound a transformer to step up voltage from a 4 Ohm output amplifier to a 100Ohm load, which was a placeholder for an ultrasonic transducer.

I also discussed various practical topics at the end of the presentation.

Video outline:

• 0:10 Introduction to topic - transformer
• 0:50 Presentation outline..
• 2:00 Ultrasonic Advisors consulting
• 3:00 Where do transformers fit in the drive circuit?
• 5:20 Why use a transformer?
• 7:30 Engineering diagram explanation
• 10:00 Transformer misconceptions
• 13:30 Voltage drop and optimal impedance for driver
• 15:50 Step 1 - Choose a core
• 18:15 Step 2 - Test your amplifier's desired load
• 21:45 Step 3 - Determine step up ratio based on target load
• 23:50 Step 5 - Determine primary and secondary winding numbers
• 26:40 Step 6 - Wind the transformer and test the inductance and the coupling factor
• 32:10 Testing the final transformer
• 34:16 Additional practical topics related to amplifier and transformers
• 44:43 Topics for future webinars
  

***Announcement***

My next webinar will be on Friday, August 18, 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