PROJECT TITLE :

A High-Efficiency Self-Oscillating Class-D Amplifier for Piezoelectric Speakers

ABSTRACT:

The design tradeoffs of the class-D amplifier (CDA) for driving piezoelectric (PZ) speakers are presented, together with efficiency, linearity, and electromagnetic interference. An implementation is proposed to attain high efficiency within the CDA design for PZ speakers to extend battery life in mobile devices. A self-oscillating closed-loop design is used to obviate the need for a carrier signal generator to attain low power consumption. The use of stacked-cascode CMOS transistors at the H-bridge output stage provides low-input capacitance to allow high-switching frequency to enhance linearity with high efficiency. Moreover, the CDA monolithic implementation achieves eighteen VPP output voltage swing during a low-voltage CMOS technology without requiring expensive high-voltage semiconductor devices. The prototype experimental results achieved a minimum THD + N of 0.025%, and a maximum potency of ninety six%. Compared to available CDA for PZ speakers, the proposed CDA achieved higher linearity, lower power consumption, and better efficiency.


Did you like this research project?

To get this research project Guidelines, Training and Code... Click Here


PROJECT TITLE :High-Efficiency Step-Down Converter ViaCoupled Inductor - 2016ABSTRACT:In this study, a high-efficiency single-input multiple-output (SIMO) step-down converter is designed. The coupled-inductor-based SIMO step-down
PROJECT TITLE :Static Regulated Multistage Semiactive LED Drivers for High-Efficiency ApplicationsABSTRACT:Semiactive light-weight-emitting diode (LED) drivers with high potency that regulate LED power statically against source
PROJECT TITLE :A Flexible Piezoelectric Pulsewave Energy Harvester for Application to High-Efficiency Multi-Functional Skin PatchesABSTRACT:A piezoelectric pulsewave energy harvester composed of flexible 3-layers generates electrical
PROJECT TITLE :Design and Analysis of a High-Efficiency DC–DC Converter With Soft Switching Capability for Renewable Energy Applications Requiring High Voltage GainABSTRACT:Renewable sources like solar photovoltaic (PV) and
PROJECT TITLE :Fast coding unit selection and motion estimation algorithm based on early detection of zero block quantified transform coefficients for high-efficiency video coding standardABSTRACT:High-potency video coding (HEVC)

Ready to Complete Your Academic MTech Project Work In Affordable Price ?

Project Enquiry