Re: Effect of a universal power connector on Energy Star and EPEAT compliance
> Ooops I just realized that we took this conversation off-line...
Oh.. so I post my reply to your reply to reflector, too :)
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From: Piotr Karocki
Sent: Friday, July 16, 2010 7:51 PM
To: Edgar Brown
Subject: RE: Effect of a universal power connector on Energy Star and EPEAT compliance
> - Supply is in standby. Nothing plugged in, but waiting.
What is difference in "supply in standby", "supply powering nothing", "supply in green mode"?
supplying, overload, short-circuit (if can be differentiated from overload), communication error, waiting for (any) device.
By the way, general question: what should happen in "comm error"? Cut power to such socket? Switch to "low power - communication only"
>> I think UPAMD should not transfer any not-own messages. Probably also from legal reasons :)
> I guess that as long as the communications part of the standard:
>- Only deals with adapter-to-device and device-to-adapter communications.
>- Specifies standard behaviors for specific messages received from outside this adapter-device boundary.
>- Serves the same functions as a dumb cable for other types of communications.
> The legal issues should not be that problematic.
Internet Service Providers has special exemptions (in law) to be not liable for effects of what they transmit.
But IF, very big if, we choose to transmit something from one side of power supply to other side, we should thing about real power-line communication; i.e. pass-throu such networks...
I think power supply CAN react to message from grid (e.g. "power would be lost"), but should send OWN message to devices.
And such "cascade UPAMD" could be another standard in family (communications, i.e. messages between grid and power supply).
Maybe, supplies compliant with UPAMD v2020, would be supplies connected to grid, to own UPS, solar cell, and powering many devices. And standard could evolve from "power-supply to devices" to "smart (home) power grid" :)