Led array Definition and 12 Threads

A LED-backlit LCD is a liquid-crystal display that uses LEDs for backlighting instead of traditional cold cathode fluorescent (CCFL) backlighting. LED-backlit displays use the same TFT LCD (thin-film-transistor liquid-crystal display) technologies as CCFL-backlit LCDs, but offer a variety of advantages over them.
While not an LED display, a television using such a combination of an LED backlight with an LCD panel is advertised as an LED TV by some manufacturers and suppliers.

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  1. M

    Electronics Sourcing LED Components for High-Wattage COB Array (1200w - Woah)

    Hello, I am looking to build an LED Panel for a film/video application. I have a few specific requirements in mind. 1) Color Accuracy beyond general CRI ratings. 2) Flicker Free to Camera (What specifications in LED drivers should I be looking for to ensure this flicker free application?) 3)...
  2. NYAME EPHRAIM

    Hi, i need to know if this DAC-op-amp calculation is ok

    Homework Statement Homework EquationsThe Attempt at a Solution
  3. I

    Infrared LED array for heating?

    We have LED arrays for visible lighting. What problems exist for using infrared LED arrays as a heat source for humans, like those in a residential settings? Does effectiveness vary much by wavelength and skin color, clothing worn, etc? Thanks. :-)
  4. J

    How to Maximize Battery Life in LED Arrays?

    I'm making an array of 11 3.3V LEDs, and I've got multiple various setups possible depending on source voltage (batteries supplying either 6V, 9V, or 12V) and whether I decide to put a bunch of the LEDs in a combination of series/parallel or all in parallel. I need to maximize battery life, so...
  5. C

    Why Does My LED Array Convergence Fail in Falstad's Circuit Simulator?

    im using falstad and my knowledge on circuits is poor or extremely basic.. $ 1 5.0E-6 34.14951009862697 50 5.0 50 162 512 288 816 288 1 2.1024259 1.0 0.0 0.0 162 544 288 896 288 1 2.1024259 1.0 0.0 0.0 162 576 288 960 288 1 2.1024259 1.0 0.0 0.0 w 896 288 816 288 0 g 960 288 960 240 0...
  6. B

    Powering an LED Array On and Off at 1kHz

    So I have a question about a circuit I'm making for class. I'm using this PowerSupply is a power supply I'm using in the lab. The 1kHz square wave is 700mV pk to pk with a 350mV offset. LEDarray is a red LED light array (http://www.ledtronics.com/Products/ProductsDetails.aspx?WP=2003). When I...
  7. W

    Resistance controlled voltage source (for led array

    hi all, I'm looking for a cheap (and by extension simple) circuit. i have a special pot (Piher's 10mm hex PT-10) that can't be changed. the pots can be physically changed but i have to use this type. the series has a 150mw power rating, with resistances of ...
  8. D

    How Can I Power a 1x1 Foot LED Array with AC Current Efficiently?

    Greetings, I am rather clueless about this stuff so I'll leave it to you guys to come up with any bright ideas for this. I'm building an array of LED's for my high school that flash to music. I'm using a TIP31C transistor to get this effect. My problem is they're wanting a 1 foot by 1 foot...
  9. J

    Powering LEDs: Array of 168 LEDs, 120V AC, 25mA, 2.8V Forward Bias

    Hey, so I have a large array of LEDs. I think I have 168 of them. I want to power them from my wall in the US (120V AC). The forward bias for each LED is 2.8V. The current rating is 25mA. I plan to arrange them in chains of about 42 to get 117.6V drop over all the LEDs. That leaves me with...
  10. W

    Learn How to Dim an LED Array with a Simple Circuit - No Switch Required!

    Hi. I've got a LED dimmer circuit. When the dc power turns on, the LED will slowly lights up. There is a switch in the circuit that if I "open" the switch, the LED will slowly turns off. The million dollar question is how do I remove the switch and the LED will slowly turns off when the...
  11. R

    Designing an LED Array Circuit for Real-Time Feedback on Exercise Equipment

    I've modified a piece of exercise equipment so that it generates 12v dc. Max current is almost certainly less than 1 amp (more than that, and the subject (exerciser) poops out fast). Standard (car lighter) plug allows any appropriate device to be powered. Current generation is being...
  12. A

    How can I control an LED array for creating patterns and designs?

    Hello all, I recently became interested in building an LED lamp as a gift for a friend. I have a good understanding of technology, but I have only a small understanding of electrical engineering. I have researched and understand how to build an actual LED lamp where I would have all the LEDs...
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