OEM led lights

HILO

Member
May 20, 2010
2,781
Grand Prairie Texas
I have noticed, mostly on top gear, that factory led tail and drls flash on camera. I have seen this on a YouTube video of a bugati veron in Dallas. Anyone else notice this? I think it must be something about the led bulbs flickering faster than we can process, and fitting caught in shutter speed.
 

nerdly_dood

Member
Jun 15, 2010
2,312
Georgia
It's one way to cause the lights to appear less bright - taillights on newer Cadillacs often will do this. Just move your eyes side-to-side quickly when you see one with the taillights on (NOT brakes, those are brighter so they don't do the fast flicker thing) and you'll sort of see what i mean.
 

Henry455

Member
May 21, 2010
513
Houston, TX
Its called pulse width modulation (PWM), efficient way to control brightness of an LED without power robbing resistors. Same technology is used to control the speed of some DC motors.
 

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