Learn Piezo Lecture 14C: The response of a piezoelectric transducer driven with a square wave

[@jingjingwu8541]

Interesting video. Thank you for sharing! I have one question. You mentioned that the harmonics of the input square wave drives the piezo transducer at different frequencies, so will it be possible to output a square ultrasonic wave if we choose proper amplitudes for the fundamental, 3rd harmonic, 5th harmonic, ..., frequencies of the input signal?

[@jingjingwu8541]

@@ultrasonicadvisors Thank you for your reply! I'm just curious that why do I need to use fundamental, 3rd and 5th harmonic are well above the driving frequency? Can't I just set them equal to the resonant frequencies of the transducer since the transducer is resonant at odd frequencies?

[@jingjingwu8541]

@@ultrasonicadvisors Thank you again for your reply! I think I need to figure out the relationship between the responses of resonant frequencies. I think I also need to design a broadband matching box for the transducer to get the proper responses at different frequencies.