Angel Eyes

[Chords]

To do the angel eyes what size resistor do i need to run 2 L.E.D's???

[JSMexUsa]

The angel eyes from BMW cars only need 12 volts and can just splice the parking light wires to connect them.
The ccfl type use a small power inverter that should come included when you buy them.

[jaykilla116]

you need to step down from 12 volts to around 3v




LEDs come in all shapes and sizes, but the 3mm T-1 or 5mm T-1¾ are probably the most common.

The die is an itty bitty cube of semiconductor, the composition of which determines the color of the light given off. It sits in the bottom of the die cup, which has reflective sides to reflect the light emitted by the die toward the dome end of the LED. The epoxy body is shaped to act as an inclusion lens and focus the light into a beam. The distance from the die cup to the domed end of the lens determines how tightly focused is the resulting beam of light. Some LEDs have flat or even concave ends to dispurse the light into a wide beam.

LED Color
Visible LEDs
Wavelength
nm Color
Name Color
Sample
over 1100 Infrared
770-1100 Longwave NIR
770-700 Shortwave NIR
700-640 Red
640-625 Orange-Red
625-615 Orange
615-600 Amber
600-585 Yellow
585-555 Yellow-Green
555-520 Green
520-480 Blue-Green
480-450 Blue
450-430 Indigo
430-395 Violet
395-320 UV-A
320-280 UV-B
280-100 UV-C
LED colors are often given in "nm", or nanometers, which is the wavelength of the light. The wavelength given is the wavelength of the peak output - LEDs are not perfectly monochromatic, but rather produce wavelengths over a small region of the spectrum. The graph on the left shows color vs. intensity for a typical green LED - the peak is at about 565 nm, but it is emitting light over a range of about 520 nm to 610 nm. Spectral line half-width is the width of this curve at 50% intensity (0.5 on the Y-axis) - for this LED, it is about 30 nm - and is a measure of the "purity" (monochromaticity) of the color.

Notice the temperature given in the upper right corner of the graph - LEDs emit slightly different colors at different temperatures. They also emit different colors at different currents, especially white LEDs which depend on phosphors to change the colored light of the die to white light.

Infrared LEDs
The infrared band can be divided into Near Infrared (NIR) and Far Infrared (IR). Far infrared is the thermal infrared used to detect hot objects or see heat leaks in buildings, and is way beyond the range of LEDs. (NIR can be further divided into two bands, longwave and shortwave NIR, based on how film and CCD cameras react, which I'll get into elsewhere, elsewhen, and elsewhy.)

[jaykilla116]

try

Some white LEDs require forward voltages (typically 3.5 or 4 volts) very close to their maximum reverse voltage (typically 5 volts), so the LED will only be on for a very small fraction of the cycle, making it very dim. For example, an LED requiring 3.5 volts driven on 5 volts AC would only see an effective AC voltage of only 0.25 volts, only 17% of the effective DC voltage of 1.5 volts.

[Cb7GHOST]

To do the angel eyes what size resistor do i need to run 2 L.E.D's???

dang that guy wrote a lot but didn't even answer the question :P
wire the LEDs in parallel and use a 470 ohm resistor.