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I know this may seem like a silly question but I was wondering ... Alot of times when I see a video of a C7 on you tube the tailights seem to be flashing very quickly . Is this an add on modulator of some sort or do the they all do this when at full throttle ?
All LED lights are modulated. Normally your eye integrates it to see solid on. Cameras are faster. I can usually see it if I look at the LED and turn my head quickly.
I know this may seem like a silly question but I was wondering ... Alot of times when I see a video of a C7 on you tube the tailights seem to be flashing very quickly . Is this an add on modulator of some sort or do the they all do this when at full throttle ?
No, it's reflecting what the lens sees and records. Remember the old western TV and movies where the stagecoach wagon wheels are going the reverse of what the wagon is? Same concept 💡 as that. It's what the lens records.
It is called Pulse Width Modulation, as noted above it is normally not be perceived by the human eye, but the cameras catch it.
"PWM is a method of changing the perceived and actual brightness of an LED by pulsing the power to the LED on and off. This is done very rapidly so there should be no perceptible flicker, but changing the average power will change the brightness."