Edoardo kinmami
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Jul 12,2022
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Commodore Amiga ATX Power Supply Adaptor

Original design by Ian Stedman. It provides 5V and ±12V to Amiga keyboard computers from a standard ATX power supply
2670
13
9
10.00 (1)
Published: Jul 12,2022
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Under the Attribution-NonCommercial-ShareAlike (CC BY-NC-SA) License.
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Topic
Hardware
Computers & USB
Power Supply
Commodore Amiga Power supply Hardware
  • Comments(9)
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    Mar 10,20234 Comments
    luvwagn 2023-03-17 10:04:28Reply

    thank you - does the tick allow for 60hz, or only 50hz? i don't see a jumper in the design

    Edoardo kinmami 2023-03-17 10:52:01Reply

    this version has only a debouncer not a tick generator. if you need a complete solution I suggest considering this https://www.pcbway.com/project/shareproject/Commodore_Amiga_2000_3000_4000_Tick_signal_generator_and_5V_rail_Power_Supply_U_97712069.html

    luvwagn 2023-03-18 09:14:55Reply
    Reply@ Edoardo kinmami：

    got it, that's unfortunate. So which Amigas would make use of this design as-is? A500/A600/A1200 style machines? Do they do their own tick generation internally? Was there a reason to separate Ian's design into two separate boards/projects? The original design seemed quite nice to have the tick generation built in, with selectable 50/60Hz. My goal for this is both an A1000 and A3000 solution.

    Edoardo kinmami 2023-03-18 10:41:11Reply

    Amiga 1000/2000/3000/4000 have a tick circuit inside the PSU (or a bypass on the motherboard). Amiga 500/600/1200/CD32 have the bypass on the VSYNC and not using an external circuit generator. However, this is not my original design. It was created by Ian Stedman. I do prefer having a std ATX PSU + my tick and -5V board generator.

    Reply

  • would be great to post the BOM here

    Mar 10,20233 Comments
    Edoardo kinmami 2023-03-10 05:48:21Reply

    https://github.com/istedman/ATX_adaptors

    luvwagn 2023-03-10 11:45:22Reply

    The BOM there doesn't open for me? There are two, and one of them doesn't match?

    Edoardo kinmami 2023-03-11 08:48:39Reply

    now listed with digi-key parts no.

    Reply
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