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Master of Science Thesis Defense: Benjamin W. Lee

When: Friday, May 1, 2015
2:00 PM - 4:00 PM
Where: Science & Engineering Building, Lester W. Cory Conference Room: Room 213A
Cost: Free
Description: TOPIC: CLASS D POWER AMPLIFIER FOR DRIVING A PIEZOELECTRIC TRANSDUCER

LOCATION: Lester W. Cory Conference Room, Science & Engineering Building (Group II), Room 213A

ABSTRACT:
A class D power amplifier was developed and tested. The intended load is a piezoelectric transducer but other loads may be used with the amplifier design. The target specifications of the amplifier are 300 W power delivered to a 4 Ω resistive load, a frequency response of 1 kHz to 40 kHz, and a THD of 2% or lower. The design of the amplifier utilizes BD modulation, a MOSFET H-bridge, and dominant-pole compensated pre-filter voltage feedback. The class D amplifier was implemented on a printed circuit board (PCB). The PCB was assembled and tested and confirmed to meet the target specifications.

NOTE: All ECE Graduate Students are ENCOURAGED to attend.
All interested parties are invited to attend. Open to the public.

Advisor: Dr. David A. Brown
Committee Members: Dr. Robert Helgeland and Dr. David Rancour, Department of Electrical & Computer Engineering and Dr. Corey Bachand, BTech Acoustics LLC

*For further information, please contact Dr. David Brown via email at dbrown@umassd.edu.
Topical Areas: General Public, University Community, Electrical and Computer Engineering