Do external power supplies have a power efficiency mandate?

At a global level, mandates for power efficiency exist for most consumer electronics and home appliances. External power supplies have had regulations dating back to 2004, when the California Energy Commission created one of the first mandates for efficiency of external power supplies used to power appliances or consumer electronic devices.

How many external power supplies are there in the EU?

In 2020, 1.7 billion external power supplies (EPS) were in use in the EU27, of which 75% for residential use, on average 6.5 units per EU household. They converted 48 TWh/a of electricity from the 220V mains to the input needed by the powered products.

What is an external power supply?

Sign up for email updates on regulations for this and other products As defined in the Code of Federal Regulations (CFR), "external power supply" means an external power supply circuit that is used to convert household electric current into DC current or lower-voltage AC current to operate a consumer product.

What percentage of power does a power supply take?

All specifications, both EU and US standards, are based on taking an average of 25%, 50%, 75% and 100% of the nominal output power.

How do I calculate my maximum power output during a camping trip?

To calculate your maximum power output, start by making a list of all the devices you plan to use simultaneously during your camping trip. For instance, you might want to charge your smartphone while powering a portable fan and a small LED light.

How much power can a Philips Hue outdoor power supply withstand?

The bottom line is that the maximum power is a little more than 70 watts, much more than the 40 watt power supply from Philips Hue should be able to withstand. But with a measuring device I was able to make interesting findings. The outdoor power supply seems to have enough reserves.