Is it time to ban LED Headlights

Cars don't really use AC though - sure the alternator kicks out AC but it will have a full bridge rectifier and regulator before any other electronics. On EVs you generally don't have an alternator and the lights will entirely use DC from the battery.

Probably using it as a penny pinching way to alter the brightness then, instead of doing it the slightly more expensive and proper way of using proper dimmable LEDs. Gives the illusion of dimming but looks ****.
 
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Probably using it as a penny pinching way to alter the brightness then, instead of doing it the slightly more expensive and proper way of using proper dimmable LEDs. Gives the illusion of dimming but looks ****.
How do you think dimmable LEDs work ?
 
Probably using it as a penny pinching way to alter the brightness then, instead of doing it the slightly more expensive and proper way of using proper dimmable LEDs. Gives the illusion of dimming but looks ****.
are you okay? We are talking rear lights. Proper dimmable is PWM. Front lights have up to 1.3million micro mirrors to manage light and you still talk about bulbs.

You should write a book.
 
How do YOU think they work? lol

Proper dimmable LEDs don't flicker as they dim. That's a workaround you see when the manufacturer has used cheap components...
Im asking how you think a led light is dimmable. I know how they work but this isn’t a free education forum
 
if were talking about implementation why don't they modify the phosphors on the headlight leds to reduce the blue component even if you loose some efficiency
HI-CRI bulbs to match sunlight - that would be a novelty, try and match HID
(previously converted some house uplighters to use philips HID - great in the living room/office)
 
Probably using it as a penny pinching way to alter the brightness then, instead of doing it the slightly more expensive and proper way of using proper dimmable LEDs. Gives the illusion of dimming but looks ****.
It's not penny pinching. PWM is the standard way of controlling the brightness of LEDs and has been for ages. Show me an LED light that is dimmable that doesn't use PWM (and runs off a DC source).
 
It's not penny pinching. PWM is the standard way of controlling the brightness of LEDs and has been for ages. Show me an LED light that is dimmable that doesn't use PWM (and runs off a DC source).

Sure but there are ways to stop them flickering using additional components. Which some manufacturers clearly haven't bother using because it costs more.
 
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Sure but there are ways to stop them flickering using additional components. Which some manufacturers clearly haven't bother using because it costs more.

You dont understand PWM do you, not that you understand much about anything
 
You dont understand PWM do you, not that you understand much about anything

You can have PWM without them flickering. You don't see it on everything. It's literally down to how much you want to spend...

They cheaped out, end of.
 
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You can have PWM without them flickering. You don't see it on everything. It's literally down to how much you want to spend...

They cheaped out, end of.
Ah the collective ‘they’. Who are they in this case.

It’s actually the frequency of the PWM rather than a missing component.

Why do you always go on about ‘cheap out’ yet admit you drive a cheap runabout. Surely you understand costs to make/run something ?
 
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One thing that has always shocked me (even now at 57), is how so many stubborn people refuse to accept they are wrong. They just tend to go quiet, refuse to “learn” and come back a few months or even years later with the same utterly debunked nonsense.
 
Can we also ban the god awful and chavvy trend of cars having illuminated strips on the front? Or even worse, illuminated badges!

Seem a few VWs with this and one that had “Vauxhall” illuminated in red. Also agree on the utterly tacky full width front LED strips. Rear at least has some merit for visibility but it just looks tacky from the front.
 
Can we also ban the god awful and chavvy trend of cars having illuminated strips on the front? Or even worse, illuminated badges!
I was thinking about this yesterday. VW have had the illuminated badge in the USA for several years but UK/EU models didn't. This year they seem to have added it. I'm guessing there was a regulatory hurdle or something.
 
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