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DESCRIPTION
LEDs are the hottest light source for designers, because they run so cool and seem so simple to interface and drive. They are used as basic indicators, for alphanumeric displays, and for illumination.
This Fundamentals course will look at their use for large-area illumination (street lamps, rooms), and display backlighting. Despite the presumed simplicity of using LEDs, the reality is more complex and nuanced. Issues covered here include LED array topologies and tradeoffs, power-supply configurations, LED and power-source reliability, safety standards, EMI/RFI concerns, and power factor considerations.
PREREQUISITES None
INTENDED AUDIENCE Circuit-design and power-supply engineers charged with developing LED arrays.
ESTIMATED TIME 35 min.
AUTHOR
Sponsored by Texas Instruments, Presented by Bill Schweber, Site Editor, Planet Analog and RF DesignLine
Bill Schweber is editor for TechInsights' Planet Analog and RF DesignLine web sites, and a regular contributor to EETimes. Prior to joining the company, he was the Analog Editor and later Executive Editor at Reed's EDN magazine. He has Bachelor's and Master's degrees in electronic engineering, and worked as an analog-circuit designer and system integrator at Instron Corp. At Analog Devices Inc., he was in applications engineering, product marketing, and corporate marketing communications. Bill is the author of three textbooks related to electronics and communication systems and a Registered Professional Engineer.
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