Re:American drivers have a blinding headlight problem. It co...
by marcosdumay on Thursday February 16, 2023 @01:34PM
(#34823355)
I am lost why anybody would even want them.
The usual ~200kHz PWM is cheaper, more reliable, smaller, and usually more powerful than anything you can build on the ~100Hz. Besides everybody sells chips for ~200kHz, but finding anything that can operate at ~100Hz is a challenge.
I can understand cheap household ones using the mains frequency to avoid an AC/DC conversion. But AFAIK, using them on a car is stupid from every conceivable point of view.
The usual ~200kHz PWM is cheaper, more reliable, smaller, and usually more powerful than anything you can build on the ~100Hz. Besides everybody sells chips for ~200kHz, but finding anything that can operate at ~100Hz is a challenge.
I can understand cheap household ones using the mains frequency to avoid an AC/DC conversion. But AFAIK, using them on a car is stupid from every conceivable point of view.