[CUBE] Power Consumption

[Richard Clark]

all this load no load stuff is getting me horny i'm off to join my not 
so cube wife in bed.

anyway great info just hope i remember it when i need it.
On Thursday, February 6, 2003, at 10:18 PM, Gnarlodious wrote:

> Entity Eng Yew Lee spoke thus:
>
>> I should have some headroom
>> as long as I dont overload my USB and Firewire ports.
> It's all a matter of heat dissipation anyway. Good to keep in mind for 
> when
> we hit 6gHz processors and 36 inch LCD's.
>
>> I love my cube!  Its a nerds delight!
> More nerdy babbling about the PS:
>
> One more oddity of the Cube's bizarre design. The external power supply
> apparently needed a gizmo on the output side to give it a polled 2 watt
> load. Under no-load conditions the pulse increases to infinitely wide 
> and
> the magnetics saturate and burn out the supply.
> This is not an issue with other designs(including PC's) because the PS 
> is
> always connected to a minimum load. If you unplug the load and run the 
> PS
> you run the risk of burning it out.
> The Cube's PS had to be designed to be potentially unloaded(unplugged) 
> so
> the upshot is that the discrepancy is not in the Cube itself but in 
> the PS.
>
> It looks like the 11-12 watt "no-load" load is what Apple decided is
> necessary to keep the pulse from overmodulating with the variance a 
> result
> of periodic polling the Cube to decide if it is plugged in or not.
>
> Hope that makes sense . . .
>
> -- Rachel 
> http://www.Gnarlodious.com/Entities/Computer/Cube/Cube.html
>
>
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