Faculty Advisor

Clancy, Edward A.

Faculty Advisor

Clements, Kevin A.


In this project, we have implemented a feedback circuit that reduces common mode electrical potentials on the human body, in order to improve the performance of bioelectric sensors. The technique, known as "driven right let" (DRL), uses a feedback-based interference cancellation method. The bioelectric sensors used were inexpensive, high impedance, electrode-amplifiers that were electrically isolated from the recorder. An interference attenuation of at least 10 times was observed. This report serves as a reference into DRL and bioamplifier circuits.


Worcester Polytechnic Institute

Date Accepted

January 2002


Electrical Engineering

Project Type

Major Qualifying Project


Restricted-WPI community only

Advisor Department

Electrical and Computer Engineering

Advisor Program

Electrical and Computer Engineering