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See also: Other versions of LED, 5mm (unlabelled, full). This SVG file contains embedded text that can be translated into your language, using any capable SVG editor, text editor or the SVG Translate tool .
LEDs have also been used as a medium-quality voltage reference in electronic circuits. The forward voltage drop (about 1.7 V for a red LED or 1.2V for an infrared) can be used instead of a Zener diode in low-voltage regulators. Red LEDs have the flattest I/V curve above the knee.
Consequently, ranges from around 1.7 to 2.0 volts for red LEDs to around 2.8 to 4.0 volts for violet LEDs. V s w i t c h {\displaystyle V_{switch}} is the voltage drop across the switch in volts: (A) for no switch, use 0 volts, (B) for mechanical switch, use 0 volts, (C) for BJT transistor , use V C E ( s a t ) {\displaystyle V_{CE(sat ...
Infrared light from the LED of a remote control as seen by a digital camera. IR data transmission is also employed in short-range communication among computer peripherals and personal digital assistants. These devices usually conform to standards published by IrDA, the Infrared Data Association.
LED development began with infrared and red devices made with gallium arsenide. Advances in materials science have enabled making devices with ever-shorter wavelengths, emitting light in a variety of colors. LEDs are usually built on an n-type substrate, with an electrode attached to the p-type layer deposited on its surface.
A standard-sized 8-pin dual in-line package (DIP) containing a 555 IC.. Integrated circuits and certain other electronic components are put into protective packages to allow easy handling and assembly onto printed circuit boards and to protect the devices from damage.
Comparison of SMD LED modules used on an LED strip light [1] The light from white LED lamps and LED strip lights is usually provided by industry standard surface-mounted device LEDs (SMD LEDs). [2] Non-SMD types of LED lighting also exist, such as COB (chip on board) and MCOB (multi-COB). Surface-mounted device LED modules are described by the ...
These sensors are able to detect electromagnetic radiation from the infrared down to the ultraviolet wavelengths. [1] They are used in many industrial and consumer applications, for example: Lamps that turn on automatically in response to darkness; Position sensors that activate when an object interrupts a light beam