Hot plug protection system

Details Hot plug protection system Hot plug protection system

1996-04-15

1998-01-27

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

361 18, H02H 900

Patent

active

057127549

ABSTRACT:
A protection circuit for a computer system having PCI expansion cards and PCI expansion slots with multiple power rails for supplying power to the PCI expansion cards, the protection circuit including a current monitor that monitors the current levels drawn by the PCI expansion card at each power rail; an inrush current controller for controlling the initial current applied to each of the power rails when an expansion card is initially inserted into an expansion slot; a voltage monitor that monitors the voltage levels applied to selected power rails; and a disconnector for disconnecting the power to the PCI expansion slot when either the current level drawn by the PCI expansion card at any of the power rails goes beyond a selected range or when the voltage levels at any of the selected monitored power rails are below a selected threshold or when commanded by the computer system.

REFERENCES:
patent: 5572395 (1996-11-01), Rasums et al.

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