• on Education & Information
  • Published in issue 12/2010 on page 32
About the article

LEDs and Illumination

How much light does that LED give?

LEDs and Illumination

LEDs are used increasingly for lighting applications. The manufacturers of LEDs outdo each other every week with announcements of ever increasing light output or efficiency. What use are all these numbers in practice and how can you measure, using only simple means, the amount of light produced by an LED cheerfully connected to a power source you just developed?

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