How much power used when device is Off.
in [Repair]
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From: sparky on 26 Dec 2009 10:59 On Dec 26, 6:37 am, Sylvia Else <syl...(a)not.at.this.address> wrote: > Phil Allison wrote: > > "Stupider than Anyone a Else Alive" > > >> Phil Allison wrote: > >>> ** The number is not fixed - like most things, it varies. > > >>> The range is from about 0.5 watt to 3 watts for a 12 watt adaptor. > > >>> Some fuckwits think this matters and have passed laws banning the sale of > >>> adaptors that use more than 0.75 watts or so when off load. > > >>> DAMN WANKERS > >>> Just like Sylvia. > > >> There's a market inefficiency. > > > ** No there is not. > > >> An adapter that wastes 3 watts > > > ** The energy is not wasted. > > >> To address this market ineffeciency, > > > ** Which does not exist. > > >> either ban such profligate power consumption, > > > ** Nothing of the sort is happening. > > > Profligate power consumption is not due to tiny adaptors and a few watts. > > > Large appliances like water heaters, air conditioners and domestic halogen > > lighting are the main culprits. > > > Fuckwits like Sylvia can never see the wood for the trees. > > > Cos her ugly head is made entirely of rotten wood. > > > .... Phil > > You seem to be assuming that the intervention is about energy > consumption. Well, maybe it is. But the intervention can be justified on > purely economic grounds. The comsumers* are better off as a result of > the intervention, even if they don't realise it. > > Sylvia > > [*] Except for the smally minority who unplug/switch off their adapters.- Hide quoted text - > > - Show quoted text - The government knows what is best for you! Just ask sylvia.
From: Phil Allison on 26 Dec 2009 18:33 "William Sommerwanker" > The primary current drawn by an "off" power supply is (I believe) mostly > reactive, so (I assume) the watt-hour meter doesn't see it. ** Completely irrelevant to the question which was about "power" and not VA. > There are market forces moving manufacturers in the direction of highly > efficient supplies -- specifically, international sales. Products are > increasingly supplied with small switching supplies that can work at 50 or > 60 Hz, at 100 to 240 volts. Thus, only one supply is required, regardless > of > where the product is sold. ** Absolute BOLLOCKS !! Small AC adaptors are built to plug into a domestic power outlet - there are dozens of different kinds round the world. So a different PHYSICAL design is therefore required for each part of the world. http://en.wikipedia.org/wiki/AC_power_plugs_and_sockets#Types_in_present_use ...... Phil
From: William Sommerwerck on 26 Dec 2009 16:58 >> There are market forces moving manufacturers in the direction >> of highly efficient supplies -- specifically, international sales. >> Products are increasingly supplied with small switching supplies >> that can work at 50 or 60 Hz, at 100 to 240 volts. Thus, only one >> supply is required, regardless of where the product is sold. > ** Absolute BOLLOCKS !! > Small AC adaptors are built to plug into a domestic power outlet > -- there are dozens of different kinds round the world. Can you say "simple, cheap adapter"? Sure you can.
From: Phil Allison on 26 Dec 2009 19:12 "PeterDope" > Depends on the quality of the transformer. A properly designed and > manufactured transformer can be very efficient. A cheap Chinese POS > can be incredibly inefficient, more a room heater than a transformer. ** The question was not about efficiency - it was about standby or "off - load " power consumption. The transformers fitted to most AC adaptors are designed to do a given job while using the least amount of materials - PLUS must be completely safe to users in case of any kind of overload or internal failure. The trannys that have become standard practice are finely tuned to these two requirements. Hence we see only E-core types with split bobbin construction with fireproof insulation around the insides of the core and/or a thermal fuse in the primary. One sized to produce 12 watts of DC power will necessarily have a standby power draw of a watt or two - simply as a result of the iron core being fully magnetised all the time. Regulations that require standby powers of 0.75 watts or less preclude to use of such designs - certainly if the output power is more than 6 watts. BTW The kind of adaptors that output AC volts are simply not included in the new regulations - since there exists no replacement for them. ..... Phil
From: Phil Allison on 26 Dec 2009 19:22
"William Sommerwanker" ** The above congenital idiot does not even read the posts he replies to. > The primary current drawn by an "off" power supply is (I believe) mostly > reactive, so (I assume) the watt-hour meter doesn't see it. ** Completely irrelevant to the question which was about "power" and not VA. > There are market forces moving manufacturers in the direction of highly > efficient supplies -- specifically, international sales. Products are > increasingly supplied with small switching supplies that can work at 50 or > 60 Hz, at 100 to 240 volts. Thus, only one supply is required, regardless > of > where the product is sold. ** Absolute BOLLOCKS !! Small AC adaptors are built to plug into a domestic power outlet - there are dozens of different kinds round the world. So a different PHYSICAL design is therefore required for each part of the world. http://en.wikipedia.org/wiki/AC_power_plugs_and_sockets#Types_in_present_use ...... Phil |