Automatic power supply selector for a ACPI-compliant PCI...

Details Automatic power supply selector for a ACPI-compliant PCI... Automatic power supply selector for a ACPI-compliant PCI...

2005-01-11

2005-01-11

DeBeradinis, Robert (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Selective or optional sources

C307S085000, C307S086000

Reexamination Certificate

active

06841898

ABSTRACT:
Apparatus for automatically selecting one of two or more available power supply voltages for use as a main power supply of a PCI adapter is described. In one embodiment, a power supply selector is designed such that the presence of a positive voltage at a Vaux input thereof prevents power at a Vcc input thereof from driving a main power supply input to a PCI adapter. Conversely, the absence of a positive voltage at the Vaux results in the main power supply input to the PCI adapter being derived from the Vcc input. In an alternative embodiment, jumpers are provided for enabling a user to select which power supply will be used as the “default” power supply for the adapter.

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