Hi Group, Last week I mentioned the introduction of new "regulations" for the power limitation of small power supplies. I looked up the document and can tell you the following:
Currently this regulation exist in the from of a "Code of conduct":
--
The European Commission has prepared a Code of Conduct in
2000 on the Efficiency of external Power supplies. (0.3 - 75W)
Signatories of this code shall:
- Achieve the following results at the dates mentioned for
at least 80% of new designs:
Per 1-1-2001 < 1W no-load power consumption
1-1-2003 < 0.75 W no-load power consumption
per 1-1-2005 < 0.3 / 0.5 / 0.75 W no-load power consumption
The latter 3 values are for < 15 < 50 and < 75 Watt rated value
respectively.
- Report the progress of the results to the European Commission.
Measurement according to prEN50301.
One of the methods of idle power reduction is using
burst mode, effectively charging larger buffer capacitors.
The savings should not lead to a reduced power quality (harmonics !).
--
I would not be surprised if this code of conduct will result
in a new directive proposal, in the same way as happened
with fluorescent ballasts in directive 2000/55/EC.
The code of conduct may be extended to power supplies of
other standby equipment such as TV, VCR's and Microwave ovens.
An independent study calculated the power consumption of wall
packs and chargers to be 14 TW (tera watt) in 2006 (Europe),
if no measures are taken. 5 TW could be reduced resulting in
500 Millions of Euros savings each year.
Regards,
Gert Gremmen, (Ing)
ce-test, qualified testing
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