Browse Prior Art Database

Full Powering Dual Path

IP.com Disclosure Number: IPCOM000121293D
Original Publication Date: 1991-Aug-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 4 page(s) / 86K

Publishing Venue

IBM

Related People

Jacquart, C: AUTHOR [+3]

Abstract

Disclosed is a system that increases machine reliability by doubling the powering of a Line Adapter Device (LAD) from its main AC entry up to its actual DC power.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 57% of the total text.

Full Powering Dual Path

      Disclosed is a system that increases machine reliability
by doubling the powering of a Line Adapter Device (LAD) from its main
AC entry up to its actual DC power.

      This Full Powering Dual Path includes 2 Prime Power Boxes
(PPBs), 2 Circuits Protectors (CPs), 2 Board Power Planes and 2 DC/DC
converters

      As shown in Fig. 1, OR circuits must be introduced in the path
and their functions will be explain later on.

      In the USA, it is possible to use 2 different AC sources from 2
different companies. Elsewhere, the second AC source can be replaced
by a DC Source.

      The 2 outputs of these PPBs are of the DC type and are ORed,
then dispatched again through Current Protectors (CPs).

      These 2 voltages are named ODD and EVEN and arrived on a mother
board, the specific design of which allows realizing the dual path.
CARD 1 and CARD 2 with their DC/DC converters, and also the Line
Adapter Card, are located on this board.

      As shown in Fig. 2, CARD 1 is plugged in the ODD position and
CARD 2 is plugged in the EVEN position ((1) indicates CARD 1 and (2)
indicates CARD 2).  (a), (b), (c), and (d) indicate Line Adapter
Cards.

      Only cards (1), (2), (a), (b), (c) and (d) are part of this
description.

      Cards (3), (4), (e), and (f) are here to indicate that the
first set of cards can be reproduced several times depending upon the
packaging of the design.

      Cards (1) and (2) a...