LED color - Electronic Circuits Projects Diagrams Free

raresh_r · 11th February 2008, 08:38 PM

Hi, is there possible to change a LED color ? i want to make the indicators from the dashboard of the car to change color in different speed(blue slow, red fast speed)

ronsimpson · 11th February 2008, 09:00 PM

You can get multi-color LEDs. There are RGB LEDs. They have 3 LEDs inside. You vary the amount of current in each LED to get the right mix of color you want.

Hero999 · 12th February 2008, 10:44 PM

RGB LEDs are pretty common but if you just want red and blue you can get red/blue bi-colour LEDs or just use an RGB and ignore the green.

http://www.lc-led.com/View/itemNumber/150

raresh_r · 12th February 2008, 11:06 PM

white and red exists ?

erosennin · 13th February 2008, 11:05 AM

Quote:

Originally Posted by raresh_r

white and red exists ?

No, red and white are mathematical constructs - just like a pixel... They do not exist.

Dean Huster · 13th February 2008, 03:36 PM

Back before blue LEDs were even developed, I had students who used to routinely change the color of red LEDs to orange by using them without current-limiting resistors for a prolonged period.

Dean

Hero999 · 15th February 2008, 03:43 PM

Quote:

Originally Posted by raresh_r

white and red exists ?

Just use an RGB LED which can produce a whole rainbow of colour, including white.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Title	Starter	Forum	Replies	Latest
555 timer flashing LED circuit	matt_hau	General Electronics Chat	15	11th February 2008 03:08 AM
LED Matrix Project Debug, Please Help :[	mekohler	Micro Controllers	2	7th December 2007 07:57 AM
LEd survival	Voltboy	General Electronics Chat	4	7th November 2007 07:52 PM
full color led display	psergiu	Micro Controllers	4	12th September 2007 09:57 PM
P channel FETs vs N channel FETs for LED Matrix applications ??	tdg8934	General Electronics Chat	3	9th September 2007 06:17 PM

11th February 2008, 08:38 PM	(permalink)
raresh_r	LED color Hi, is there possible to change a LED color ? i want to make the indicators from the dashboard of the car to change color in different speed(blue slow, red fast speed)

11th February 2008, 09:00 PM	(permalink)
ronsimpson	You can get multi-color LEDs. There are RGB LEDs. They have 3 LEDs inside. You vary the amount of current in each LED to get the right mix of color you want.

12th February 2008, 10:44 PM	(permalink)
Hero999	RGB LEDs are pretty common but if you just want red and blue you can get red/blue bi-colour LEDs or just use an RGB and ignore the green. http://www.lc-led.com/View/itemNumber/150 __________________ I also post at the following sites: http://www.stop-microsoft.org http://www.heated-debates.com Screen name: Aloone_Jonez

12th February 2008, 11:06 PM	(permalink)
raresh_r	white and red exists ?

13th February 2008, 03:36 PM	(permalink)
Dean Huster	Back before blue LEDs were even developed, I had students who used to routinely change the color of red LEDs to orange by using them without current-limiting resistors for a prolonged period. Dean __________________ Dean Huster, Electronics Curmudgeon Contributing Editor emeritus, "Q & A", of the former "Poptronics" magazine (formerly "Popular Electronics" and "Electronics Now" magazines). R.I.P.