Buzby
Senior Member
Hi All,
I was talking with a colleague whilst he drove back from the airport, and we got talking about LED dimming. I said that LED brake and tail lights are PWM'ed, and if you can move your eyes 'just right' the strobing can be seen.
He said I was talking rubbish, as he couldn't see any effects on lights of the cars in front of us. He then said 'Why should they be PWM'ed, there is no need to dim them ?'.
The only reason I could think of was that it might save the power dissipation from a linear regulator, but I'm not sure.
Do any of the forum members know the real reason ?.
Cheers,
Buzby
I was talking with a colleague whilst he drove back from the airport, and we got talking about LED dimming. I said that LED brake and tail lights are PWM'ed, and if you can move your eyes 'just right' the strobing can be seen.
He said I was talking rubbish, as he couldn't see any effects on lights of the cars in front of us. He then said 'Why should they be PWM'ed, there is no need to dim them ?'.
The only reason I could think of was that it might save the power dissipation from a linear regulator, but I'm not sure.
Do any of the forum members know the real reason ?.
Cheers,
Buzby