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Apparatus for Raising and Lowering Voltage on Circuit Card as Card is Plugged into Circuit Board and Unplugged

IP.com Disclosure Number: IPCOM000037690D
Original Publication Date: 1989-May-01
Included in the Prior Art Database: 2005-Jan-29

Publishing Venue

IBM

Related People

Authors:
Corcoran, PM Culver, JV Ferraiolo, FD Turits, AC [+details]

Abstract

A circuit board has signal pins and power pins and circuit cards that are plugged into the board have corresponding pin sockets. When a card is to be removed from the board or replaced, the power to the board is conventionally disconnected to avoid transient electrical signals on the power conductors that could interfere with the operating circuits.