3 ms·
I rarely notice PWM strobing with most LEDs at home. However, once place where I do notice it and it's annoying is with taillights on some cars - sometimes whe
by Johnny555 8y ago
I rarely notice PWM strobing with most LEDs at home.
However, once place where I do notice it and it's annoying is with taillights on some cars - sometimes when I sweep my eyes across the cars ahead, I see the strobe effect from LED taillights.
It doesn't seem to happen with all cars.
I've noticed it in a few bike taillights, but not nearly as much as in cars. I used to have an early LED bike headlight, and the strobing was very apparent when the light was dimmmed, I could only use it at its highest level.
- fyfy18 8y agoI recently walked along a road with some Christmas lights (installed by the city) with the most horrible flicker. When looking at them straight on you could just notice it, but from the corner of my eye it was really bad and distracting. I wonder if there have been any studies done on the dangers for drivers of LED flicker.
- Unklejoe 8y agoI've noticed this with the LED strip on the lower front bumper of newer Mercedes cars. I'm pretty sure the DOT requires that your headlights don't blink, so I wonder how low the PWM frequency can be until they consider it blinking? I also wonder whether they do it on purpose. How hard would it be to run the PWM at a few kHz instead of the < 100 Hz frequency it seems like they're using?