2 ms·
LEDs use constant current drivers, though. And even if you disagree, LEDs need to be current limited, so something will break with a large pulse of current, the
by genewitch 1y ago
LEDs use constant current drivers, though. And even if you disagree, LEDs need to be current limited, so something will break with a large pulse of current, the driver or the LEDs themselves.
Maybe sodium lights are immune, in isolation?
- jcrawfordor 1y agothe constant-current drivers in LED lighting are a very different concept from constant-current lighting circuits, which are a ~1920s technology rarely seen today. constant-current lighting circuits can be miles long, operate at up to 1kV or so, and require some type of cut-out/bypass feature at each individual light so that a failure of a single bulb does not take the entire circuit out. The problems that constant-current lighting circuits address (maximizing the life of incandescent bulbs) are all solved in different, more robust ways in modern lighting systems. Most significantly, the carbon-disc cutouts that were the direct cause of the street lighting failures are no longer used (even in legacy constant-current lighting systems, where they have been replaced with more modern devices).