A Study on Piezoelectric Elements and Its Utility in Designing of Electronic Scale

All the electrical or electronic equipment need electrical power supply to operate. Most of these equipments are powered by conventional electricity resources. Conventional energy resource in form of electricity is most economic and cost effective. However this may not be suitable for some applications like portable instruments or the equipments used at remote areas. Therefore there is always search for alternate energy sources and solar energy, biogas, windmill etc. are the results of such searches. They may not be cost effective and there are several disadvantages in these sources. Piezoelectric generator (PEG) is one type of non-conventional energy source that can convert mechanical energy to electrical energy. Though their energy conversion is very low, but they may be used in some typical applications of portable and low power consuming devices. In this paper some investigation has been made how energy can be extracted from piezoelectric generators and efficiency can be improved which is applied as the power source to operate an Electronic Scale. Keywords: Piezoelectricity, Piezoelectric generators, Transversal, Shear, Display driver