I just realised that a laptop I bought has a PWM screen, at every level of brightness.
Is that harmful as suggested by the interweb?
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No. PWM is all around you.
Michael Murphy | https://murfy.nz | https://keybase.io/michaelmurfy - Referral Links: Sharesies | Electric Kiwi
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gehenna: Wth is pwm?
https://en.wikipedia.org/wiki/Pulse-width_modulation
Basically turning something off and on very fast. Used in LED lights, screens, TV's, computers, phones, speakers etc... It is how many devices operate.
Michael Murphy | https://murfy.nz | https://keybase.io/michaelmurfy - Referral Links: Sharesies | Electric Kiwi
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michaelmurfy:
No. PWM is all around you.
I sure dont like looking at screens with it. Hard to find a TV without it now since they all try to save energy to keep europe happy and panasonic even brag about having backlight flicker - or "blank frame insertion" as some marketing type called it.
anyone else has any ideas? thanks
Involuntary autocorrect in operation on mobile device. Apologies in advance.
Batman:anyone else has any ideas? thanks
So, I have become obsessed and testing everything for PWM
So it turns out Iphone OLEDs all have PWM at 240Hz, so does my Samsung Galaxy S10 Plus at 240Hz. My laptop is at around 200Hz.
My lights have flicker too, but I'm guessing that's at 50Hz?
Luckily none of my other laptops and monitor screens and OLED TV and LCD TV have PWM.
Not sure what to make of it really.
Involuntary autocorrect in operation on mobile device. Apologies in advance.
Batman:
Luckily none of my other laptops and monitor screens and OLED TV and LCD TV have PWM.
I bet you they do...
Michael Murphy | https://murfy.nz | https://keybase.io/michaelmurfy - Referral Links: Sharesies | Electric Kiwi
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SpartanVXL: Pwm is where the backlight, not the image, is modulated to reduce power while producing the same effect.
michaelmurfy:Batman:Luckily none of my other laptops and monitor screens and OLED TV and LCD TV have PWM.
I bet you they do...
Involuntary autocorrect in operation on mobile device. Apologies in advance.
Wait... is this thread real?
I don't care who you are... there is no way you can see flicker at 200+ Hz.....
Quite obvious when you are reading white text on a black background which it has dimmed the backlight inorder to save a handful of watts. Instead of seeing solid text as your eyes move its a series of images. Not as annoying as going to the cinema but still bad.
chevrolux:
Wait... is this thread real?
I don't care who you are... there is no way you can see flicker at 200+ Hz.....
you can't see the flicker.
but your eyes are reacting to them 200x per second and some people think that could cause damage
Involuntary autocorrect in operation on mobile device. Apologies in advance.
If you are really worried try one of these,
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