4 ms·

The sustained power levels are listed as: 5V: 4.5A 12V: 1.0A -12V: 0.1A I get 44.5+121+12*0.1=35.7 W from that, but then there has to be some l

by unwind 3y ago

The sustained power levels are listed as: 5V: 4.5A 12V: 1.0A -12V: 0.1A I get 44.5+121+12*0.1=35.7 W from that, but then there has to be some losses too in that 5 V-regulation, but 60 W is probably a bit extreme. No idea how much power an Amiga consumes, though ... found [1] which states 35.7 W (hm) or 25.7 W so it seems to be aiming for the higher of the two which of course makes sense. The A600 and A1200 need even less, max 22.2 W for both models. [1]: http://www.ianstedman.co.uk/amiga-power-supply-guide/ http://www.ianstedman.co.uk/amiga-power-supply-guide/

rob74 3y ago
I did more or less the same calculation when I arrived at 60 W, but with the peak power levels - if a PSU isn't able to deliver the peak current, which is probably needed when the computer boots up (with the HD spinning up etc.), I'm afraid it won't get to the "sustained" phase...
- danby 3y ago
  Most amigas users are using some kind of solid state storage these days which will ameliorate this a little. But many/most are using assorted expansion and accelerator cards which can substantially increase the power draw. It's a bit if a moveable feast how much power an amiga is drawing these days. Certainly, back in the 90s, the original a1200 power supplies often needed to be replaced with something that could deliver more, and the a500 supplies were favoured
  - bluescrn 3y ago
    Many Amigas also have a Raspberry Pi inside them these days, for the PiStorm accelerator, which increases the +5V current requirements a fair bit.
    - danby 3y ago
      Is the pi usually on it's own power supply?
      - bluescrn 3y ago
        Not with the PiStorm32 Lite that I've got. Seemed to run OK with a Pi 4 on an original Commodore PSU, or at least nothing appears to have blown up or melted when running it for short periods. Maybe I'm pushing my luck, but then again, back in the day, you'd often be running an accelerator board, hard drive, and a couple of floppy drives from that same PSU, so maybe it's up to the job.

by unwind 3y ago

rob74 3y ago

I did more or less the same calculation when I arrived at 60 W, but with the peak power levels - if a PSU isn't able to deliver the peak current, which is probably needed when the computer boots up (with the HD spinning up etc.), I'm afraid it won't get to the "sustained" phase...

danby 3y ago
Most amigas users are using some kind of solid state storage these days which will ameliorate this a little. But many/most are using assorted expansion and accelerator cards which can substantially increase the power draw. It's a bit if a moveable feast how much power an amiga is drawing these days. Certainly, back in the 90s, the original a1200 power supplies often needed to be replaced with something that could deliver more, and the a500 supplies were favoured
- bluescrn 3y ago
  Many Amigas also have a Raspberry Pi inside them these days, for the PiStorm accelerator, which increases the +5V current requirements a fair bit.
  - danby 3y ago
    Is the pi usually on it's own power supply?
    - bluescrn 3y ago
      Not with the PiStorm32 Lite that I've got. Seemed to run OK with a Pi 4 on an original Commodore PSU, or at least nothing appears to have blown up or melted when running it for short periods. Maybe I'm pushing my luck, but then again, back in the day, you'd often be running an accelerator board, hard drive, and a couple of floppy drives from that same PSU, so maybe it's up to the job.