How many pn junction a tri colour LED has? I think its three, am i right ?
F Thread Starter Faisal 2121 Joined Oct 15, 2008 6 Nov 4, 2008 #1 How many pn junction a tri colour LED has? I think its three, am i right ?
thingmaker3 Joined May 16, 2005 5,083 Nov 4, 2008 #2 You are correct. Typically a tri-color LED houses three LEDs under one lens, and ties the cathodes together on a common lead.
You are correct. Typically a tri-color LED houses three LEDs under one lens, and ties the cathodes together on a common lead.
Wendy Joined Mar 24, 2008 23,421 Nov 5, 2008 #3 I always thought tri color as in Red and Green, which could produce Yellow (tricolor = 3 colors). You're discribing a RGB diode. TriColor as I'm thinking of it is two leads, two LEDs, reverse the polaritry with AC to get yellow.
I always thought tri color as in Red and Green, which could produce Yellow (tricolor = 3 colors). You're discribing a RGB diode. TriColor as I'm thinking of it is two leads, two LEDs, reverse the polaritry with AC to get yellow.
bertus Joined Apr 5, 2008 22,276 Nov 5, 2008 #4 Hello, There are also leds with red and blue in one, the third color look purple/pink (depending how bright blue is) like. Greetings, Bertus
Hello, There are also leds with red and blue in one, the third color look purple/pink (depending how bright blue is) like. Greetings, Bertus
SgtWookie Joined Jul 17, 2007 22,230 Nov 5, 2008 #5 RGB LEDs are available in common cathode and common anode configurations. They both have three PN junctions. There are also red/green LEDs that have but two PN junctions. A yellowish-brown color can be displayed by lighting up both the red and green. There are also many other color combinations available nowadays.
RGB LEDs are available in common cathode and common anode configurations. They both have three PN junctions. There are also red/green LEDs that have but two PN junctions. A yellowish-brown color can be displayed by lighting up both the red and green. There are also many other color combinations available nowadays.
T trrobbie Joined Dec 11, 2008 4 Dec 23, 2008 #6 The newest ones that rad shaft has are red, green and blue in one unit. Just got one a few weeks ago.(its a cc unit) Interesting thing to play with. I`ll find a use for it someday!? Robbie in wyoming
The newest ones that rad shaft has are red, green and blue in one unit. Just got one a few weeks ago.(its a cc unit) Interesting thing to play with. I`ll find a use for it someday!? Robbie in wyoming
Audioguru Joined Dec 20, 2007 11,248 Dec 23, 2008 #7 My solar garden lights have an RGB LED with 2 wires and 3 LEDs inside that slowly fade the colours.