On May 20, 2006, at 9:02 AM, Harold Hallikainen wrote:

> It sounds like you've got a "wall wart" transformer running the lamp.
> These are well known for their inefficiency and standby power
> requirements. As such, they are about to be outlawed in California. I
> think the simplest solution to the problem is to buy a new high 
> efficiency
> wall wart, which is generally a wall mounted switching power supply.

Are switching wall-warts really that much more efficient in standby
mode than linear supplies?  Are they much more efficient than linear
supplies at the sort of standard currents such things provide (less
than 500mA)?  Or is this just another one of california's sillier
laws?

BillW
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