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Ultrasonic Transducer Driver adjust frequency

supak111

★ƃuᴉɯǝɥɔs sʎɐʍlɐ★
Apr 29, 2012
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Hey everyone, I'm messing around the some ultrasonic transducers, I have a few 40Khz, 28Khz..... But I only have a 40Khz 110v driver.

Was wonder if anyone can tell me if this drive could be modified for different frequencies? It would be best if I could modify it so that I can adjust the frequency on a the fly. Any ides?

60W-28KHz-font-b-Ultrasonic-b-font-font-b-Cleaning-b-font-font-b-Transducer-b.jpg
 

Alec_t

Jul 7, 2015
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If the inductor is part of the frequency-determining network then changing that would alter the frequency.
 

kellys_eye

Jun 25, 2010
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The output transformer is usually 'tuned' to the transducer (resonance) as the drive voltage is considerably higher than the supply voltage and, as a result, you can't use them at different frequencies.
 

supak111

★ƃuᴉɯǝɥɔs sʎɐʍlɐ★
Apr 29, 2012
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The output transformer is usually 'tuned' to the transducer (resonance) as the drive voltage is considerably higher than the supply voltage and, as a result, you can't use them at different frequencies.

Oh ok thank you, figured I'd ask since I had no clue
 

Audioguru

Sep 24, 2016
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The datasheet of the ultrasonic transducer will show a graph of its very narrow range of frequencies. Maybe 38kHz to 42kHz.
 

supak111

★ƃuᴉɯǝɥɔs sʎɐʍlɐ★
Apr 29, 2012
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I have few transducers those aren't the issue, but I only have one driver. I know which frequency transducers I have, I just didn't want to buy more drivers if I can make this one adjustable
 
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