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Sir
My doubt is about an ultrasonic receiver circuit. The circiut is deccribed in the below link. **broken link removed** In the figure -13 in page 9 of this document show an IC 4556. I dont know whether it is NJ 4556 or CD4556. Please respond to me...
once again thanks. I have tried it on the basis of a paper published in Nature. Details are as follows.
Ultrasonicmetamaterials with negative modulus
NICHOLAS FANG, DONGJUAN XI, JIANYI XU, MURALIDHAR AMBATI, WERAYUT SRITURAVANICH,
CHENG SUN AND XIANG ZHANG*
From theory i am getting three...
Thanks for the reply. I am about to solve an acoustic problem related wth helmholtz resonator. Usually helmholtz resonators have neck and a cavity. this neck can be replaced by inductor and cavity can be replaced by capacitor as an electrical analogy. When i solved the problem acoustically i...
Dear all, I have written a code for phononic 2d structure. I have used kronecker delta as source. Here kronecker delta is represented as nine zeros followed by 10e-6 and then 1250 zeros. The signal gives a frequency range from zero to 30 MHz. But my region of interest is in kHz. What...
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