• on Education & Information
  • Published in issue 11/2010 on page 69
About the article

Simple IR remote control tester

Design Tip

On the Internet you can find them in all shapes and sizes: circuits to test remote controls. Here we describe a simple and cheap method which is not that well-known. This method is based on the principle that an LED does not only generate light when you apply a voltage to it, but also works in the opposite direction to generate a voltage when light falls on it.

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