Technical Discussions: Re: alternative generation of ultrasound waves

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Re: alternative generation of ultrasound waves
Posted by: kostas papas , E-mail: lakourtis@hotmail.com, on December 21, 2004 at 16:33 :
In Reply to: Re: alternative generation of ultrasound waves posted by : Wolfgang Bisle on December 20, 2004 at 14:12:
Thank you very much for the usefull information you provided.

I was wondering whether the standard technology used for speakers (where a magnet is vibrated by means of a magnetic field generated by a coil) can be used for the generation of ultrasound waves.

I am mostly interested in contact applications (where the sourse is in contact with the solid under interrogation) and not for airborne applications. Such an apllication would be challenging since there would be no need for a wired stimulation of the wave source, since one has only to drive the coil and not the magnet. Can such a speaker work for high frequencies?

Again, thank you very much for your feedback.

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----------- Start Original Message ----------- : Thank you very much for the usefull information you provided. : : I was wondering whether the standard technology used for speakers (where a magnet is vibrated by means of a magnetic field generated by a coil) can be used for the generation of ultrasound waves. : : I am mostly interested in contact applications (where the sourse is in contact with the solid under interrogation) and not for airborne applications. Such an apllication would be challenging since there would be no need for a wired stimulation of the wave source, since one has only to drive the coil and not the magnet. Can such a speaker work for high frequencies? : : Again, thank you very much for your feedback. ------------ End Original Message ------------

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