Thanks, Ronni, that explains it completely as far as my particular issue goes.  
Severin

On 30/07/2011, at 10:52 AM, Ronda Brown wrote:

> Hi Severin,
> 
> iMac Intel:
> Sleeping: 48 Watts.
> Shutdown but plugged in: 16 Watts.
> Shutdown with the power strip turned off: 0 Watts.
> 
> The newer Apple Computers use 'Active Power Factor Correction' power supply, 
> not 'Passive Power Factor Correction' power supply.
> 
> I’m wondering 'if' the G5 used 'Passive PFC' and the iMac uses 'Active PFC’ 
> could that possibly cause what you are experiencing?
> 
> I don’t profess to understand power,  this is more James of  SAD Technic’s 
> field of expertise.
> 
> Cheers,
> Ronni
> 
> 
> On 29/07/2011, at 11:39 PM, Severin Crisp wrote:
> 
>> Could be but as you say it does not make much sense.
>>   Regards
>> Severin
>> 
>> On 29/07/2011, at 5:39 PM, Ronda Brown wrote:
>> 
>>> Hi Severin,
>>> 
>>>  In System Preferences > Energy Saver. Do you have the iMac set to “Wake 
>>> for Network Access’.
>>> Even the iMac is shutdown but still plugged in, this could cause some power 
>>> consumption, whether its enough to cause what you are experiencing I have 
>>> no idea ;-)
>>> 
>>> Cheers,
>>> Ronni
>>> 
>>> On 29/07/2011, at 4:34 PM, Severin Crisp wrote:
>>> 
>>>> For some time I have been using a Jackson PT 9778 power board.   This a 
>>>> clever energy saving device.  It is an ordinary power board in most 
>>>> respects with surge protection but the outlets are a master and slaves.  
>>>> My G5 plugged in to the master socket and all the peripherals into the 
>>>> slaves.  When the G5 was running and drawing power all the slaves are on.  
>>>> When the G5 was switched off or shutdown all the slaves went off too and 
>>>> came back on when the G5 restarted.   
>>>> The problem is that the G5 is now an iMac and the board does not like it.  
>>>> When the iMac is running all is fine but when it shuts down the 
>>>> peripherals shut down then keep trying to restart in an on and off 
>>>> fashion.  From my reading there is a threshold of about 30mA at which shut 
>>>> down happens and I am wondering if the iMac still draws this in a shutdown 
>>>> state, though that seems bizarre!   I have rechecked the functionality of 
>>>> the board in a different setup and it is fine.  
>>>> Any comments or similar tales would be most welcome.  
>>>> Severin Crisp
>>>> ________________________________________________________
>>>>                    Assoc Professor R Severin Crisp, FIP, CPhys, FAIP
>>>>        15 Thomas St, Mount Clarence, Albany, 6330, Western Australia.
>>>>                     Phone  (08) 9842 1950   (Int'l +61 8 9842 1950)
>>>>                             email  mailto:sevcr...@westnet.com.au  
> 
> 
> 
> 
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________________________________________________________
                   Assoc Professor R Severin Crisp, FIP, CPhys, FAIP
       15 Thomas St, Mount Clarence, Albany, 6330, Western Australia.
                    Phone  (08) 9842 1950   (Int'l +61 8 9842 1950)
                            email  mailto:sevcr...@westnet.com.au  
________________________________________________________





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