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ERIC Number: EJ1141121
Record Type: Journal
Publication Date: 2017-May
Pages: 7
Abstractor: As Provided
ISSN: ISSN-0018-9359
Undergraduate Electronics Projects Based on the Design of an Optical Wireless Audio Transmission System
Oliveira, Luis Bica; Paulino, Nuno; Oliveira, João P.; Santos-Tavares, Rui; Pereira, Nuno; Goes, João
IEEE Transactions on Education, v60 n2 p105-111 May 2017
The two projects presented in this paper can be used either as two separate assignments in two different semesters or as a final assignment for undergraduate students of electrical engineering. They have two main objectives: first, to teach basic electronic circuit design concepts and, second, to motivate the students to learn more about analog circuit design. The two projects are: (1) the design of an audio power amplifier, and (2) the design of an amplitude-modulated optical link with a pulsed light-emitting diode (LED) at the emitter and a photodiode and a transimpedance amplifier at the receiver. An audio signal is used to modulate the oscillator that drives the LED, and the receiver demodulates this signal to produce an audio signal (music, for example) that can be sent to a loudspeaker. The intent of this optical communication system was to allow students to design and build various electronic circuits that have an overall objective and a clear practical application. Students are motivated by using this system to transmit, receive, and listen to their own music.
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: Portugal
Grant or Contract Numbers: N/A