What is a single-voltage External AC-DC power supply?

Definitions Single-voltage external AC-DC power supply means an external power supply that is designed to convert line voltage AC into lower-voltage DC output and is able to convert to only one DC output voltage at a time.

What is a direct operation power supply?

A direct operation, AC-DC external power supply with nameplate output voltage less than 3 volts and nameplate output current greater than or equal to 1,000 milliamps that charges the battery of a product that is fully or primarily motor operated. Looking forward

Are all external power supplies treated the same?

Not all external power supplies are treated the same and exemptions exist in both the United States and the European Union. In the US, Congress has written provisions into section 301 of EISA 2007 that exclude some types of external power supplies. These are devices that:

When did power supply efficiency and no-load power draw become mandatory?

The global regulatory environment surrounding the legislation of external power supply efficiency and no-load power draw has rapidly evolved over the past decade since the California Energy Commission (CEC) implemented the first mandatory standard in 2004.

What is a low voltage external power supply?

Low-voltage external power supply means an external power supply with a nameplate output voltage less than 6 volts and nameplate output current greater than or equal to 550 milliamps. Basic-voltage external power supply means an external power supply that is not a low-voltage power supply. Direct vs indirect operation EPSS

Are external power supplies exempt?

External power supplies for medical devices, battery chargers, and service products are exempt. In addition, an exemption exists for low-voltage EPS devices. Low-voltage external power supply means a unit with a nameplate output voltage of less than 6 volts and a nameplate output current greater than or equal to 550 mA. Moving to Level VI