PhD Thesis, Imperial College of London (1989)ĬTS Electronic components data sheet for PZT 5A. Guo, The Vibration Characteristics of Piezoelectric discs. Kumar, Periasamy, Simulation study and performance optimization of piezoelectric mems device for acoustic sensor applications. Yellampalli, Piezoelectric acoustic pressure sensor diaphragm design for energy harvesting, in International Conference on Advances in Energy Conversion Technologies (ICAECT), Manipal, (2014, 23–).Ī. This proposed analysis can further assist in the conversion of anything into a speaker. The magnetic response of the PZT disc of 40 mm diameter has also been studied. For studying the stationary and dynamic performances of the PZT disc, simulation of the disc for a set range of frequency using COMSOL Multiphysics is done. A circular PZT disc is modelled and analysed practically for variation in thicknesses and diameters of its plate on COMSOL Multiphysics. The fundamental design requirements like oscillations in the audible frequency range and maximum surface displacement have been considered. Displacements of diaphragm under different magnetic field strengths have been analysed. A novel simulation has been executed to find the behaviour of the piezo structure under the influence of magnetic field. In the following paper, an analysis for the design of efficient piezoelectric-based speaker is carried out. When acoustic voltage signals are put across the ceramic part of the piezoelectric speakers, it leads to the oscillation of the material. When voltage is applied to the speaker, it will create waves of sound. Simple as that.Piezoelectric speakers work on the inverse piezoelectric effect to produce sound. To do this, we simply send the low impedance signal from the amplifier into the low impedance coil, and this will produce a high impedance signal to drive the piezo. In order to drive the piezo using the amplifier, we need to take the low impedance output from the amplifier and make it high impedance. The piezo is typically a high impedance device, and the audio amplifier is always providing a low impedance signal to drive a speaker. However, we have the opposite problem we need to solve. The audio output transformer is designed to take a high impedance source and make it low impedance. Typically, audio sources have a high impedance of a few thousand ohms, and speakers have a low impedance around 8 ohms. Long story short, impedance is kind of like resistance in AC electronics (but not exactly the same). The reason the input is the output is because of impedance, a concept we are not really covering in this class, but one particularly important when dealing with transformers and AC electronics. Typically the primary is the input side, but we are actually driving the transformer backwards, so the primary side is our output to the piezo. Make note of which jack is connected to the side of the transformer labeled "P". Insert the jacks into the mounting holes in the enclosure. If you would like an alternate suggestion for a supplier of any of the parts, please let me know. I reinvest this money into materials and tools for future projects. However, I earn a small commission if you click on any of those links and buy anything. This does not change the price of any of the items for sale. ![]() Please note that some of the links on this page contain Amazon affiliate links. ![]() If you can't find one, then just buy any old male-to-male mono cable and cut off one end, and strip away the insulation to expose the wire. *** This type of cable has a plug on one end and a signal and ground wire on the other end. ![]() Then plug the piezo cable into the female adapter. To connect the amp's output to the piezo I recommend just buying a female jack adapter, and connecting wires between the adapter and one of the red and black pairs of speaker output ports in the back (black-to-ground, and red-to-left). This one that is linked should work as replacement. You might still be able to find it on Ebay. (x1) Double-sided tape * It has been brought to my attention that the Radioshack test amp I used is no longer available since they went out of business. (x2) 1/8" male-to-male mono (or stereo) cable To Turn Nearly Anything into a Speaker you will need:
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