This page describes the IBM SMS card "DEYU", and is part of the SMS card database.

Function of the card:
N to P Buffer Converter (both loads)

Part number: 371326

Used in: IBM 7090

Cap code: YU (details)

Symbol: CB

CB: Converter Buffer. A converter block that uses the current mode transmission line driver signal sent from a transmitting frame to generate voltage swings referenced to voltage planes of other frames.

References: IBM Standard Modular System, Component Circuits, pp75,76
SMS Cap Code Templates & Index

The information on these pages comes from a variety of sources, especially old IBM documents on bitsavers.org, as well as information from the IBM 1401 restoration team, especially Tim Coslet's SMS data and Jim Hunt's data. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.