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

Function of the card:
P to S Current Mode to Voltage Mode Converter

Listed in 1401 SMS card usage

Part number: 371031

Used in: IBM 729II, IBM 7090, 7030


C: Converter. Used to translate from one voltage level to another, or to change the amplitude of the voltage swing about the same reference level.
IBM SMS card type AQ 371031 IBM SMS card type AQ 371031

References: IBM Standard Modular System, Component Circuits, p35
This page created by Ken Shirriff on Wed Sep 15 18:15:09 2021.

The information on these pages comes from a variety of sources, especially old IBM documents on, 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.