Abstract: A power supply for providing power to an electrical device is described. The power supply converts a received input signal to a first electrical having a first voltage level at a first power converter. The power supply additionally converts the first electrical signal to a second electrical signal having a second voltage level at a second power converter, to provide the second electrical signal having the second voltage level to an output port. The power supply includes a circuit to selectively bypass the second power converter and provide the first electrical signal having the first voltage level from the first power converter to the output port. The first power converter may include one or more switches that may be disabled to disconnect power from the first power converter for additional standby power saving features.

Abstract: A legacy adapter for use with devices to be powered by a power adapter is described. The legacy adapter includes a multi-purpose power connector configured to couple to a power adapter external to the electrical device, a connector configured to connect the electrical device, and a microprocessor configured to communicate digitally with the power adapter. The microprocessor communicates power requirements of the electrical device to the power adapter through the multi-purpose power connector. A related method of receiving power from a power adapter external to an electrical device through a legacy adapter is also described.

Abstract: A power adapter capable of communicating digitally with a device or a legacy adapter associated with a device is described. The power adapter includes an input port to receive power from a power source, a regulator to convert the received power from the power source, an output port configured to deliver power from the regulator to a device, and a microprocessor configured to communicate digitally with a communication module associated with the device to determine the power requirements of the device. The regulator converts the power from the power source in accordance with the power requirements of the device. A related method of adapting power to a device is also described.

Abstract: An automatic sensing power system automatically determines a power requirement for an electrical device, converts power to the required level, and outputs the power to the electrical device when the electrical device is connected to the automatic sensing power system.

Abstract: An automatic sensing power system automatically determines a power requirement for an electrical device, converts power to the required level, and outputs the power to the electrical device when the electrical device is connected to the automatic sensing power system.