Browse Prior Art Database

Programmable Selective Power Control in a Distributed Power System

IP.com Disclosure Number: IPCOM000120384D
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

Beatty, BA: AUTHOR

Abstract

This article describes a technique and hardware implementation to selectively control power to identified units in a computer system with distributed power.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 68% of the total text.

Programmable Selective Power Control in a Distributed Power System

      This article describes a technique and hardware
implementation to selectively control power to identified units in a
computer system with distributed power.

      Most power program applications do not require the use of all
the direct access storage devices (DASDs) and feature cards found in
most computer systems.  These devices, although they are not used in
the program, use power.  This unused power dissipation can
significantly reduce battery operating time and the battery life, and
it generates heat which can reduce the life of the components.
Currently, cards and options that are not needed are removed, if
there is concern about battery "hold up time," heat, or mean time
between failure (MTBF) of components.

      The concept disclosed herein of turning off selective devices
under software control, is easy to implement when used with a
computer that uses distributed power.  It does not require the
operator to open the system and remove any un-needed components, such
as feature cards or DASD drives. In a distributed power system, the
DASD drives, the feature cards, etc., each have their own DC/DC
regulators.  These regulators have an "inhibit" input that can turn
the regulator on or off with only a logic signal from any signal
source.

      The drawing shows an implementation of the concept of this
disclosure.

      All software applications can have access to programma...