Hot pluggable motherboard bus connection method

Details Hot pluggable motherboard bus connection method Hot pluggable motherboard bus connection method

1993-06-30

1995-12-05

Deboer, Todd

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

323908, 395750, H02H 900

Patent

active

054734991

ABSTRACT:
A method of connecting an IC card to a motherboard involves first connecting the ground busses, then the power busses and finally the general signal busses. When the power busses are connected, a low current is allowed to flow initially, then, a predetermined period of time is allowed to elapse for equalization of IC card and motherboard voltages, then a full current is allowed to flow. A method of disconnecting an IC card from a motherboard involves first disconnecting the general signal busses, then the power busses and finally the ground busses.

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IBM Technical Disclosure Bulletin, vol. 32, No. 9B, Feb. 1990, pp. 424-429, "Hot-Plug Protection Circuit".

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