1. Not old. Vintage. :)

Atari Power Supply (PSU) Overview

Overview of Atari-oriented power supplies


{Recovered Atari Sector}
________ ________

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Just a very (short n sweet) guide to what's what PSU-wise
it'll provide an idea to how to replace old/broken or damaged Atari PSUs.

5V DC (1.5A)
600XL, 800XL, 800XE, 65XE, 130XE

9V AC (500mA)
1010

9V AC (600mA)
1030

9V AC (1.7A)
400, 800, 822, 850, 1010, 1200XL, Rana 1000

9V AC (2.0A)
400, 800, 810, 822, 850, 1010, 1200XL, Rana 1000, 1050

9V AC (3.0A)
400, 800, 810, 822, 850, 1010, 1020, 1050, 1200XL, XF551, Rana 1000

9V AC (3.2A)
400, 800, 810, 822, 850, 1010, 1020, 1050, 1200XL, XF551, Rana 1000

9V AC (3.4A)
400, 800, 810, 822, 850, 1010, 1020, 1050, 1200XL, XF551, Rana 1000

9V AC (5.6A)
400, 800, 810, 822, 850, 1010, 1020, 1050, 1200XL, XF551, Rana 1000

9.5V AC (4.2 A)
1027,1090XL

20V AC (330 mA)
835

20V AC (400 mA)
830

24V AC (150 mA)
830

9V DC (2.0A)
Indus GT

11V DC (2.0A)
Indus GT

12V DC (2.0A)
Indus GT


Attached guide to XL/XE PSUs:

clockwise from top-right:

C061982 'Box' 1.5A - usually very safe
C70042-01 'Logo' 1A - very reliable
C70042-011 'Mini' 1A - usually safe, but use "Logo" with XEGS for better reliability
C061982 'Black Brick' 1.5A - usually very safe
C061982 "White Brick' 1.5A - usually safe
C061982 'Ingot' - 1.5A dodgy, unreliable, can take you computer with it when it blows

upload_2020-6-22_9-49-52.jpeg

many of the comments later in this thread bear out 2.0a or > being sufficient to power a 1050 under load.

I've added some of those comments later in my post Aug 29th 2018
Now - here's the thing: All indications are there shouldn't be a risk of damage to equipment, but please bear in mind
you take your own risks - Atari sector are not responsible for your outcomes.

{Lost content here, then continues...}

...

it shouldn't make a bit of difference.
the only actual difference is the amperage of 2.0 as opposed to 3.4
reality is that it's about what the PSU can handle and what computer/drive requires
which is why you find that some devices (highlighted) appear against more than one PSU, while others appear to have one suitable PSU only
- as long as you match to the correct polarity you should be ok with an atari 800 using
9V AC (1.7A)
9V AC (2.0A)
9V AC (3.4A)
9V AC (5.6A)​

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    1. Graham Jul 10, 2020
      A Quick Comment in regard the last statement "
      - as long as you match to the correct polarity you should be ok with an atari 800 using
      9V AC (1.7A)
      9V AC (2.0A)
      9V AC (3.4A)
      9V AC (5.6A)"
      AC is alternating current so has no polarity