Ultrasonic Transducer Driver adjust frequency

[supak111]

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?

 

[Alec_t]

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

 

[kellys_eye]

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]

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]

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

 

[supak111]

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