Lighting, Video, Survellance & Security
Current
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Figure 1: N and P type doping of an LED
LEDs are fast replacing Fluorescent light bulbs and incandescent light bulbs in many lighting applications. In the past these sources could be driven directly from the mains voltage, but this is not possible with LEDs. This paper looks at what an LED is, how to drive it, and also how to choose the
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Date:
6/13/2011
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Available in serial or parallel wiring options, the new Molex array holder simplifies LED installation. Array holder is shown with and without optional Ingress Protection
Here follows an in-depth look into just how synergistic electronics, optical and lighting industries are yielding new and award-winning technologies to revolutionize the world of LED luminaires.
LEDs are driving a paradigm shift away from traditional incandescent lights toward energy efficient,
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Date:
6/13/2011
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Table 1: Comparison of LEDs, CFL & Incandescent Light Sources
Most of the new LED lighting fixture applications will be required to run from existing AC offline power sources, generally 90VAC to 265VAC depending on the end application’s geography. The ability to drive LEDs effectively from AC offline power presents some rather unique LED IC driver design challenges.
Background
As
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Date:
6/11/2011
As lighting technologies transition from power-hungry incandescents to cold-cathode fluorescent lamps (CCFLs), and now to LEDs, it is clear that while end-users are willing to pay more for greener light there is an inherent expectation that longer life and improved reliability will be the net benefit
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Date:
6/11/2011
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Figure 1: LED street lights
High brightness LED street lights are now being installed in pilot projects at many sites. In most cases these are replacing high intensity discharge (HID) and high pressure sodium (HPS) street lamps.
Although HID lamps have long operating life and high luminous efficacy, well designed LED
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Date:
6/8/2011
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Figure 1: Single Stage Equalizer for 300 meters of Cat 5 cable
Transmission cables have improved, but the challenge is always the same: get more messages down longer cables faster. It may sound simple, but the longer the cable, the greater the losses. These losses would affect any type of transmission, but they are complicated at higher data rates, like video.
The
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Date:
6/1/2011