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Is your ultrasonic transducer working at the right frequency?
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- Опубликовано: 4 фев 2021
- In this video, I explain different methods to find out if your ultrasonic transducer is working at the right frequency.
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Thank you
My pleasure!
Have you a video explaining in basic language of a piezo spec sheet and how to get max loudness in db etc etc
Thanks for the suggestion. I'll do that
Thanks a lot, I wondered if you could share some information (or make a video) for customized ultrasonic generators with wide frequency range (10kHz range) for exciting one transducer with several horns, like the ultrasonic bone surgery devices, which a transducer works with over 90 inserts (horn), how is that possible?
That is a really good idea! I am planning to get to this topic, because it is quite important.
I have a project where I plan using a royer oscillator (ZVS type) to power a langevin transducer.
I understand how to calculate frequecy (LC circuit) of primary, but for secondary winding what would be other considertaion?
I have less experience with oscillators than I would like. However, here is my thought. I've seen oscillator driven transducers operated with high voltage at semi-off-resonance conditions. this makes the transducer look like a capacitor. Also, at times the primary side is made to be dominant, so the transducer has little effect on operating frequency. Hope that provides some insight.
How to find whether your ultrasonic transducer is calibrated? Use a calibrated ultrasonic transducer wired as a microphone!!
That works!
Hlw ...i need help regarding active vibration control can you make a video on it plz
I have not worked in that area, but I might consider researching the topic and making a video.
could you please introduce some useful books about power ultrasonics?
Thanks for the question. Unfortunately, I don't have a recommendation.
Thanks a lot for giving this kind of info, got a question if i might :
i have a watt / frequentiemeter if i put that between the generator and the piezo elements i kan read both values .
The ferq. the generator produces can be tuned by a pot. meter on the bord .
Do i go for that freq. where the power is at its highest ?? Thanks
Yes, in general you will go for the frequency at which the power is the largest. However, you should be searching for this frequency in a range that you already expect, for examples for a 40kHz transducer, you will search between 36khz-44kHz
@@ultrasonicadvisors thank you , the wattage is the highest on 38.3 khz , while the transducers where on 40 +/_ 0,1 Khz
could it be that the piezo elements are failing? or could for example the cleaning tank design has influence ?? greetings from a cold Norway !!
@@UltralydvaskingLillehammer Love the discussion. Is your transducer mounted? The stand alone transducer maybe 40kHz, but mounted it maybe 38kHz.
@@ultrasonicadvisors yes the transducers are bonded to the tank , its a 250 ltr tank with 4x10 50watt transducers, every row of 10 piezo"s. Is fed by a 500watt generator which i can adjust.
So i go for that freq. Where the wattage peaks?
@@UltralydvaskingLillehammer In general, yes. However, I think 500W may not be powerful enough to drive 40 transducers?
Can listening to these high frequencies cause tinitus which is ringing in the ears and has no cure. I would advise people not to mess with this stuff.
Hmm hard to say. Don't know much about that. You can't hear ultrasonic frequencies, but with your ear in the wrong place, you can still get subjected to a significant amount of energy. I would say not to worry about it unless you are putting your head inside an ultrasonic cleaning tank or you are working on high power air transducers.
@@ultrasonicadvisors Thanks for your reply. I still think it's very dangerous based on the fact there is no cure for tinitus and many many people get it worldwide. It could trigger it in some people.
How to generate frequency for "40khz 35W Ultrasonic Piezoelectric Cleaning Transducer " properly work.
Great question. Easiest way is to buy a commercially available circuit. Many of them are based off oscillator circuits (no digital control)
@@ultrasonicadvisorsthank you sir, i want to made above circuit , plz give me resources, (link or image).
Is 40khz ultrasound harmful?
40kHz from distance sensors and ultrasonic cleaners are not harmful