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

Function of the card:
Overvoltage Protection 30 Volt
Power supply 30v overvoltage

Part number:370570

Field replacement part number:370578

Used in:IBM 1401

References:
1_2 SMS Cards, p12.
This page created by Ken Shirriff, 2015.

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. Images courtesy of Randall Neff. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.

Creation time: Tue Mar 03 23:40:34 2015.