The CEC's mandatory efficiency requirements for the use of external power supplies in consumer audio, video equipment, and appliances sold
in California went into effect in December of 2004. With continual updates to the regulations, the next taking effect on January 1, 2007, these standards mandate minimum efficiency levels in
active and no-load modes and maximum standby requirements.
Mark
Description
Performance Requirements
Nameplate Power Output (Pno)
No-Load Power
Nameplate Power Output (Pno)
Average Active Efficiency
I
Used if none of the other criteria are met.
III
California: CEC Tier 1 standard January 1, 2007 (mandatory) - Laptop computers, mobile phones, printers, print servers, scanners, PDA,
digital cameras. July 1st, 2007 - Wireline telephones and all other applications
0 to < 10W
10 to 250W
≤0.5W
≤0.75W
0 to 1W
> 1 to 49W
> 49 to 250W
≥0.49 x Pno
≥0.09 x Ln(Pno) + 0.49
>=0.84
IV
California: CEC Tier 2 standard July 1, 2008 (mandatory)
0 to < 10W
10 to 250W
≤0.5W
≤0.5W
0 to 1W
> 1 to 51W
> 51 to 250W
≥0.5 x Pno ≥0.09 x Ln(Pno) + 0.5
≥0.85
Where Pno is the Nameplate Output Power of the unit under test. Ln refers to the natural logarithm.
