Is there any way of dimming a yellow LED ( dunno if color factors in ) as to cut down the light put out by it ? ( keep in mind im totally new to this, and i have searched the forums a bit, and googled the topic but it kept giving me stuff about the dimming of traffic lights ) and i am aware of there being another post about LED's a few threads below this, but its sorta the opposite of what im wondering and i didnt wanna hijack that persons thread and im also wondering if by dimming ( if its possible ) it will extend the LEDs' life even if just by a little bit *Update on my current project* the designs are coming along... its just a matter of being 100% accurate withem thats eaten 2 days of my time already !! sorry if this is considered to be newbie spam
Hello there! You question is a good one, do not worry its not spam...in that case I should be shot Okay, if its an ultrabright you cant drop the current TOOO much. If it drops below the cut off it will simply turn off.... best play around with a pot connected to the led and see how low you can turn it and do a simply calc and see its lowest current..
It's quite easy. Use a LED resistance calculator and double or even triple the ohm value of the resistor ... should work.
im gonna power 4 leds on the same 12v line ( for future reference) so i take the values supply voltage: 12 V Continuous Current: 20 mA Forward Voltage: 2.4 V and it comes out for me to use a 560 ohm resistor so i get 4x resistors in the range of 1120 or somethin close too it correct ? *edit* nm i got it now thanx for the help guys ! and sorry it was posted in the wrong section
