[Coco] Educate me about Y-Cables

[RETRO Innovations]

On 2/22/2015 10:19 AM, David Ladd wrote:
> On Sun, Feb 22, 2015 at 12:59 AM, RETRO Innovations <go4retro at go4retro.com>
> wrote:
>
>> I laid out all of the equations in Verilog tonight, and I believe I have
>> replicated the 4 slot MPI functionality with 5 ICs (1 '245, 3 541s, and 1
>> xc9572xl CPLD). A couple thoughts:
>>
>>   * Found some nice triple output brick-like PSUs, so that does not seem
>>     to be a major challenge.  To make for more options, I put a simple
>>     2.5mm coax connector on for 5VDC as well and can easily add a
>>     Mini-USB for 5VDC power.  I think Mini USB wall warts only do 1Amp,
>>     though, so not sure if that would be enough to run 4 carts
>>
> ​What about using a current notebook power supply like many mini-ITX
> motherboards use and DC-DC switching supply?
>
> Example would be something like this:
> http://www.aliexpress.com/item/Free-Tracked-Shipping-12V-DC-DC-ATX-PC-Power-Supplies-ATOM-HTPC-ITX-PC-mini-pico/1290214637.html?s=p
>
> Using something like this would give you the +12V, -12​V, +5V
>
> Just a idea and my 2cents worth :D
I looked at generating all of the voltages from a single source, but 
triple output PSUs are not hard to obtain, and are pretty reasonable, 
and for the price in this item, I can get an entire PSU for just a few 
bucks more than this DC-DC converter.

Jim