Browse Prior Art Database

Status Interface Circuit

IP.com Disclosure Number: IPCOM000068295D
Original Publication Date: 1979-Dec-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Buyna, RJ [+details]

Abstract

High reliability systems employ redundant parts, such as redundant power suplies, to insure that failures will not interrupt the critical service performed by the system. Power supplies are available having a built-in test bit, as shown in Fig. 1, which outputs a relatively high logic voltage value when the power supply is in good operational condition and which outputs a relatively low logic voltage value when the power supply is in a faulty condition. Where there are several redundant power supplies, monitoring logic can be provided to accept these test bit signals for monitoring purposes.