3 ms·
Before ATX and ACPI standards a typical power button was just a switch in power supply's AC circuit: https://www.youtube.com/watch?v=SYdnPTX0FD8 https://www.yo
by anonymfus 9y ago
Before ATX and ACPI standards a typical power button was just a switch in power supply's AC circuit:
https://www.youtube.com/watch?v=SYdnPTX0FD8 https://www.youtube.com/watch?v=SYdnPTX0FD8
- jsmthrowaway 9y agoA model of PS/2 I worked on when I was a teenager had mains voltage across two exposed terminals behind the big power switch. I discovered this when dropping a screwdriver across them.
- jamiepenney 9y agoHad a power supply open to replace the fan, turned it on while open to test if it was wired up correctly. I flicked the switch with my thumb, with two fingers inside the case to stabilise it as the fan was loose. Those fingers briefly touched across the back of the switch and I got 240v mains straight to my hand. Luckily it caused my whole arm to contract so my hand couldn't seize up around the terminals!