Re: ATX power supply with gigabit ethernet G4

[Joshua Coombs]

ADC specs 4Amps output, so figure 4.5 amps if pushing ADC & Firewire at full 
draw as a guestimate.  If not using ADC/Firewire and just want the machine 
to boot, .5amps will do it.  Note, the actual voltage output by Apple 
powersupplies is 24v, which is much easier to find in a wall wart than 28v. 
: )

As far as deriving 28v off a 12v rail on an ATX powersupply, that will only 
work if you never want the machine to power off.  ATX powersupplies only 
leave a 5v standby line lit when switched off.

Joshua Coombs
----- Original Message ----- 
From: "Philip Stortz" <[EMAIL PROTECTED]>
To: "G-List" <g-list@mail.maclaunch.com>
Sent: Friday, January 07, 2005 5:01 PM
Subject: Re: ATX power supply with gigabit ethernet G4


not much if a wall wart will do!  i believe it's about an amp or so.  i 
suspect the frankenmac sites
listed earlier will tell you.  i was unaware of this problem, i thought an 
atx supply would just
work.  seems like there might be a market for converted atx supplies with 
the 28V available and
wired correctly.  what size power supplies are people using?  it's fairly 
straight forward to get
28V from the 12V the supply already has with a little switching power 
supply, especially since it's
low power.

[EMAIL PROTECTED] wrote:
There is another question.  Do you know what amperage is required?
Thanks again

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