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Super Bright Led Diodes

Anybody have (or can design) a Knight Rider 12 LED Schematic?
A really tough question/challenge for those electronic savvy people out there:
I have 12 SUPER Bright LED's and a 12-Volt power source. Is there a circuit schematic available online that will let me use all 12 LED's and light them up like that famous Knight Rider car (KITT) from the '80's?
Notes:
---the LED's require about 5 Volts for max light intensity, but a little less is acceptable, so we can say 2V to 5V
---I have access to random IC's (LM555CN/NE555N/74154N) just to name a few, plus numerous resistors/capacitors/diodes (or buying is always an option)
---I have a good understanding of circuits, but I am in the early stages of being able to design them. So any kind of schematic will do (as long as it is clear)
---To make this an more challenging question, the preferred display involves the LED's to turn on (as it cycles) and to FADE off (just like the show's car)
Thanks in advanced
–O.
It's called an LED Chaser. Here you go. All you need.
http://www.aaroncake.net/circuits/chaser.asp
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Protonled Engineer in Lyons Ga Asks: In using super bright Proton LED diodes in a RGB combination, the dies cause heat at 20 mA. Does anyone have an answer for dissipating the heat given off if the dies are too close? www.protonled.com
Well, you don't really provide enough information for me to give you a meaningful answer, as I don't know what your constraints are. The packaging of an electronic device will determine your "theta junction to case" and if you can't change the packaging of the device (LED), then the only thing you can do is provide a low thermal impedance between the LED case and the ambient environment. This might involve thermal pads, heatspreaders, heatsinks, heatpipes, fans, etc.
The right thermal solution will depend on how much power you need to dissipate, your highest ambient temperature, your maximum allowed junction temperature, and the physical and cost constraints of your design.














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