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

Function of the card:
Power Supply Sequencing

Listed in 1401 SMS card usage

Part number: 370429

PCB number: 484163

Used in: IBM 1401

Symbol:+6S, -6S, -12S

IBM SMS card type AJH 370429 IBM SMS card type AJH 370429 IBM SMS card type AJH 370429 IBM SMS card type AJH 370429

Image courtesy of Henk Stegeman

References: Coslet data
2_2 SMS Cards, p142
This page created by Ken Shirriff on Wed Sep 15 18:15:10 2021.

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.