Light-emitting diode

Light-emitting diode

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Credit: POWER AND SYRED/SCIENCE PHOTO LIBRARY

Caption: Light-emitting diode (LED), cutaway computer artwork. LEDs contain a semiconductor (red square, centre left) that emits light when a current passes through it. The semiconductor is usually aluminium-gallium-arsenide. LEDs are used extensively in electrical devices and circuit boards to indicate the presence of a voltage.

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Keywords: anode, artwork, cathode, cgi, component, computer artwork, cutaway, digitally generated, diode, electrical engineering, electronics, equipment, galium arsenide crystal, graphic, high-intensity, illustration, led, light, light-emitting, one, single, technology

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