Browse Prior Art Database

Solid-State Bypass Circuit

IP.com Disclosure Number: IPCOM000055568D
Original Publication Date: 1980-Aug-01
Included in the Prior Art Database: 2005-Feb-13

Publishing Venue

IBM

Related People

Authors:
Davis, JB Lanier, CS Schmidt, AL Schultz, RA Sze, DT [+details]

Abstract

In devices that receive information on one transmission line and send information on another transmission line, it is sometimes necessary to bypass the device, for example, upon loss of power or for diagnostic checking. A solid-state solution to that bypass problem is described. The circuit (1) provides power-down bypass for fail-safe operation as well as controllable powered bypass or block and (2) correctly chooses proper termination for the signal path. (Note: This problem does not exist in a receive/retransmit type bypass scheme.)