A transducer is a device that transmits power from one system to another. In the case of the piezoelectric, they power comes in the form of electricity from a piezoelectric material acted on. Piezoelectricity may be described as the property of some materials that become electrically charged when subject to mechanical stress. These special materials also show a similar effect by undergoing mechanical deformation due to the application of an electric field. This effect was first discovered in 1880 in naturally occurring single crystals such as quartz. The reason certain materials have piezoelectric effects is related to the lack of symmetry in the unit cell. With the lack of symmetry, electric dipoles form due to mechanical distortion.

Piezoelectric material characteristics depend on stress, strain, displacement and the applied electric field on the material. Table 1 shows a summery of the basic parameters of a piezoelectric material. Figure 1 - Symbols and Terminology, expands the basic parameters. The materials direction of polarization is designated as the z-axis of an orthogonal crystallographic system. The x.y.z axes are represented as 1,2,3 direction

Piezoelectric materials constant are important to know. The density of the material effects is piezoelectric ability. Another constant is known as Curie temperature. The structure the material changes at Curie temperature from piezoelectric (non-symmetrical) to a non-piezoelectric (symmetrical) form. Along with the phase change peak in the dielectric constant-temperature curve at that temperature. The Curie temperature noted, Tc, is expressed in degrees Celsius. The dielectric constant, relative permittivity, is defined as the ratio of the permittivity of the material to the permittivity of free space. The dielectric loss factor is another constant representing the ratio of resistance to reactance of parallel equivalent circuit of the material element see Figure 2 - Notation for Relative Permittivity. Other constants of piezoelectric material include frequency, coupling coefficient, charge coefficient, voltage coefficient, elastic, and aging rate.

The piezoelectric force transducer is a special material that transmits power. The characteristics of the material and how the material is effected govern the power transmission magnitude.

Some common words found in the essay are:
Symbols Terminology, , Force Transducer, LIVM System, System Model, Transducers Calibrated, Relative Permittivity, piezoelectric force, Canada L9Y3Z4, piezoelectric force transducer, Accelerometer System, force transducer, piezoelectric material, charge mode, Woodlyn PA, electric field, livm system, curie temperature, mode system, charge mode system, livm system charge, static forces, basic setup type, forces piezoelectric, system charge mode,
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