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#22 (permalink) | |
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'91 6-Speed
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Also if any one would like to donate RT tails or any car or truck tail lights, it would be put to good use "prototypes/Testing". Thanks Jordan @ LNC P.S. check out are web site www.latenightcustom.com
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![]() 1991 VR-4: Six Speed, 3g lifter, Brakes, Rims, Polishing, Powder coating, Custom LED Tail Lights... ![]() 1987 FZ600: 100% Powder coated, Rejeted/tuned... 1990 Civic |
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#23 (permalink) | |
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Verified Seller
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I have a few guys interested in a GB on the Acura Legend forums... but they have many questions. Here is one of the replies...
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#24 (permalink) |
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'91 6-Speed
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Well a PWM (Pulse Width Modulator/Modulation) is a little circuit composed of a few components of capacitors and resistors along with a 555 timer microchip.
the basic use of the PWM creates a series of very fast on/off switching, along with how long the ons or offs will be. Seeing as LEDs are so sensitive to voltage, it is very difficult to dim them the conventional way so the only efficient way to "dim" them is to have them turn on and off very fast... in Hz. by doing this, you notice that the LEDs become dim. For some of the car companies using PWMs, you'll be able to notice the tail lights flicker so to speak if you look at them very quickly... but only on the parking light stage. as for strobing, you can use the same circuit, but switch out some of the resistors to different values, slowing down the on/off's. Hope that helped ![]() |
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#25 (permalink) |
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Verified Seller
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Well, my (this guy's) question as a potential buyer was more specifically if he buys your LED tail conversion will there be a noticeable flicker in the parking lights? if so what would the flicker rate be comparable to... a computer screen? A flourescent light?
Last edited by DC 95VR-4 : 01-31-2006 at 05:25 PM. |
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#26 (permalink) |
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'91 6-Speed
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Ahhh. Well heres a bit of refrences.... most computer monitors are around 60hz, newer ones are about 75hz... if you move your eyes fast enough around ( OR your head fast enought ) you can see a flicker. And the further away you get the more intense it will seem. A flourescent light, in the US ( us uses 60hz a sec in the power lines ) will be about 120hz, and in Europe, the rate will be around 100 ( europe has 50hz lines )
The human eye can see around the 10-30hz range, depending on ambiant light and intensity of the source flickering light. the PWN circuits that we use peak out around 270hz. With a variable resistor giving it a 4%-98% duty cycle... so depending on how much you turn up or down the resistor (potentiometer) will give you a higher or lower flicker or refresh rate... basically .... 10.8 hz to about 264.6 hz being the max. BMW likes to use PWM circuits... next time you see a 745 rolling by with its parking lights on, move your eyes back and fourth a bit and see if you can notice the trail or flicker... but not too long, gotta keep your eyes on the road! hope that helps ya! Last edited by jta3000gtvr4 : 01-31-2006 at 09:44 PM. |
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#27 (permalink) |
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NO Barack HUSSEIN Osama!!
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i wonder if the RT rear will require less than 400 led bulb thingees and be cheaper. The RT would necessitate turn signals integrated of course..
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Lamborghini Marketing VP describing Countach- "on the down side, you can't take packages, there are only two seats so no kids, only a beautiful woman. The white one, she is like a virgin. The red one is like a mature woman, the black one like an intriguing woman."
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#28 (permalink) | |
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'91 6-Speed
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