LED Craze

[StirCrazy]

Originally Posted by mike31154

Depending on the frequency of the AC signal (60Hz in the case of our homes), you will not even perceive that the LED is actually turning off & on 60 times a second. The average human eye can not perceive a flicker at that frequency. That's one of the reasons 60 Hz is used to supply our homes with power. Should that number ever drop into the 40 Hz or lower range, you will start to see a flicker in most lighting, including incandescent & some flourescents.

actually you will see a horrible flicker with the LEDs, and yes you see the flicker on a florescent, it is a bout a 50/50 toss up between people who it bothers and who it doesn't. I never knew it bothered me until I upgraded all my fluorescent to electronic ballasts now I really notice the 60 Hertz flicker on old fixtures. Digital or electronic florescent ballasts are why people don't see this flicker at all anymore as it raises the Hertz to 20,000 or higher. so old people like me who remember when electronic ballasts were a thing only the rich an famous could afford

in the case of LEDs they show the flicker even more because they only produce light on one of the wave lengths of a cycle (where every other light uses both sides of the wave, so they are already off 1/2 the time on a ac signal, so this intensifies the 60 Hertz flicker.

you will have to be down to about 40 or 30 Hertz before an incandescent will show a noticeable flicker and for them they are not actually turning on and off but rather a slight dimming as the element cools. I have had a 40 watt bulb down to 25 Hertz and while after a bit it would be annoying, it was not really a flicker but rather it would dim and bright dim and bright, but fading between the two extremes not on off

Steve