2 ms·
Desktop power supplies already have that, they can keep the power on for 50-100 ms or so, and they do notify the OS about the imminent power loss. I'm not sure
by 21 9y ago
Desktop power supplies already have that, they can keep the power on for 50-100 ms or so, and they do notify the OS about the imminent power loss. I'm not sure what OSes do with that.
- gsich 9y agoHow do they notify?
- londons_explore 9y agoATX power supplies have a PWR_OK pin, which goes low when power is lost. Most motherboards don't report that to the OS though, instead they simply reset all the hardware. To be fair, it's probably preferable to reset stuff than to operate when the power supply isn't healthy, since that will lead to a lot of weird undefined behaviour.