All About LEDs Chicago IL

Light-emitting diodes have come a long way over the past decade. Here's why they're showing up in more pro AV applications in Chicago.

Local Companies

Popular Electronics Inc.
1-773-338-5460
2455 W. Devon
Chicago, IL
Crosstown Electric Supply Corporation
(773) 476-0180
7733 S Western Ave
Chicago, IL
Cpc Electrical Supply
(312) 658-1313
200 W Madison St
Chicago, IL
Antek Madison Plastics
(773) 933-0900
8822 S Dobson Ave
Chicago, IL
Archer Electric of Chicago Inc
(773) 767-0152
5964 S Archer Ave
Chicago, IL
Gem Electric Supply Inc
(773) 247-7711
4784 S Archer Ave
Chicago, IL
Zenith Controls Inc
(773) 247-2704
830 W 40th St
Chicago, IL
Newark Inone
(915) 772-3912
Chicago, IL
Tortilleria Atotonilco
(773) 376-8750
1707 W 47th St
Chicago, IL
City Electric Supply
(312) 376-0072
128 N Campbell Ave
Chicago, IL

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Source: PRO AV Magazine
Publication date: January 1, 2006

By Tim Kridel

Despite being about the size of your pinkie's fingernail, light-emitting diodes (LEDs) aren't far behind transistors in terms of ubiquity. Over the past few decades, they've found a home in everything from TV remote controls to Jumbotrons. Chances are if you haven't encountered LEDs in an AV installation, you will soon.

All diodes — including LEDs — have an anode (positive) terminal at one end and a cathode (negative) terminal at the other, but they allow current to flow in only one direction. (In an LED, the anode and cathode are the two wires poking out the bottom.) Diodes are unbalanced in the sense that they don't have equal amounts of negatively and positively charged particles. The more extra electrons that are floating around, looking for a home, the more conductive the diode is. A byproduct of their movement is light — a phenomenon LEDs leverage.

Here's how the process works: Multiple electrons orbit around an atom, and the ones with more energy orbit farther away. When an electron jumps to a closer orbit, energy is released as photons, which are a rudimentary form of light. As the homeless electrons move across a diode, they change orbits, producing light. However, sometimes that light isn't visible — as is the case with the infrared produced by the LEDs poking out of the end of your TV's remote control, for example.

Click here to read full article from Pro AV Magazine

Featured Local Company

Popular Electronics Inc.

1-773-338-5460
2455 W. Devon
Chicago, IL

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