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led lighting, turn signals, parking, brake


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americasfuture 
Member - Posts: 19
Member spacespace
Joined: June 26, 2007
Location: United States
Posted: June 26, 2007 at 8:10 PM / IP Logged  

ok so i have 100 red, 100 white, and 100 amber leds. im wanting to do 100 red leds per tail light. how would i figure the resistance to use for this? if it needs resistance. i dont know what way with parallel or series i would need resistance. and also how would i figure the resistance to use for so many leds? im not sure what the number i will need for brake/turns/night time indicators. here it is for the red (100): 

  • Emitted Colour : RED
  • Size (mm) : 5mm
  • Lens Colour : Water Clear
  • Peak Wave Length (nm) : 620~630
  • Forward Voltage (V) : 1.8 ~ 2.2
  • Reverse Current (uA) : <=30
  • Luminous Intensity Typ Iv (mcd) : Average in 5000
  • Life Rating : 100,000 Hours
  • Viewing Angle : 20 ~ 25 Degree
  • Absolute Maximum Ratings (Ta=25°C)
  • Max Power Dissipation : 80mw
  • Max Continuous Forward Current : 30mA
  • Max Peak Forward Current : 75mA
  • Reverse Voltage : 5~6V
  • Lead Soldering Temperature : 240°C (<5Sec)
  • Operating Temperature Range : -25°C ~ +85°C
  • Preservative Temperature Range : -30°C ~ +100°C

here it is for the white (100):

  • Emitted Colour : White
  • Size (mm) : 3mm
  • Lens Colour : Water Clear
  • Peak Wave Length (nm) : N/A
  • Forward Voltage (V) : 3.2 ~ 3.8
  • Reverse Current (uA) : <=30
  • Luminous Intensity Typ Iv (mcd) : Average in 6000
  • Life Rating : 100,000 Hours
  • Viewing Angle : 20 ~ 25 Degree
  • Absolute Maximum Ratings (Ta=25°C)
  • Max Power Dissipation : 80mw
  • Max Continuous Forward Current : 30mA
  • Max Peak Forward Current : 75mA
  • Reverse Voltage : 5~6V
  • Lead Soldering Temperature : 240°C (<5Sec)
  • Operating Temperature Range : -25°C ~ +85°C
  • Preservative Temperature Range : -30°C ~ +100°C

and here is the info for the amber (100):

<"Arial" >

Emitted Colour : Yellow

Size (mm) : 5mm

Lens Colour : Water Clear

Peak Wave Length (nm) : 585 ~ 595

Forward Voltage (V) : 1.8 ~ 2.2

Reverse Current (uA) : <= 30

Luminous Intensity Typ Iv (mcd) : 4000(Typical) ~ 5000(Max)

Life Rating : 100,000 Hours

Viewing Angle : 20 Degree

Absolute Maximum Ratings ( Ta = 25°C )

Max Power Dissipation : 80 mw

Max Continuous Forward Current : 30 mA

Max Peak Forward Current : 75 mA

Reverse Voltage : 5 ~ 6 V

Lead Soldering Temperature : 240°C ( < 5 Sec )

Operating Temperature Range : -25°C ~ +85°C

Preservative Temperature Range : -30°C ~ +100°C

bellsracer 
Silver - Posts: 703
Silver spacespace
Joined: January 14, 2006
Location: United States
Posted: June 26, 2007 at 10:38 PM / IP Logged  

There is a bit more to this LED project than what you are aware of here, dear.

LED Tail Lights are cool and everything but you also have to consider DOT approval. Doing an installation like this may not be street legal unless you buy DOT approved lighting. It varies from state to state but all states have at least some requirements that must be met. Brightness, Visibility at 500 feet (varies), Visibility Angle and Lighting Angle.

With that said, I recommend that you look for the lighting requirements for your state before you continure on this project. It does sound cool, don't get me wrong, but I think pretty much all of us here at 12v would agree with me that if the project is intended to be on the road, that we prefer not to get involved with DOT violations.

However, if you find that the LEDs will stay within the requirements of DOT approvals, then I'm sure many of us will try to help you out on figuring the wiring project you need to get done.

So sorry I could not give technical advice right now, but for liability reasons, I do not wish to be involved on a street vehicle project that potentially makes the car not street legal anymore.

But it isn't all bad news, if you are planning on retaining the factory bulbs too, MOST states will let you add additional LEDs as support lighting for the vehicle. So you can keep the turn signal bulb, for example, and then circle the light with a ring of leds.

So the key here is finding out what is legal and what is not so you can make the most out of this project. The best of luck to you.

Ganbatte ne!

Never send your ducks to eagle school.
The difference between ordinary and extraordinary is that little extra.
The 3Ls of life: Learn from the Past, Live for the Present, Look to the Future.
americasfuture 
Member - Posts: 19
Member spacespace
Joined: June 26, 2007
Location: United States
Posted: June 27, 2007 at 6:08 PM / IP Logged  
i dont really care about DOT. but im sure the way im wanting to make them will be ok enough. but want to figure out how to findout what resistance i will need to use for so many leds.
americasfuture 
Member - Posts: 19
Member spacespace
Joined: June 26, 2007
Location: United States
Posted: June 27, 2007 at 8:25 PM / IP Logged  
well i found what i needed in another post. i wish search would work on my phones browser.

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