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

Function of the card:
N toP Converter (in-phase load)

Listed in 1401 SMS card usage

Part number: 371201

Used in: IBM 729II, IBM 7090, IBM 7070


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 AMZY 371201 IBM SMS card type AMZY 371201 IBM SMS card type AMZY 371201

References: 1_2 SMS Cards, p28
IBM Standard Modular System, Component Circuits, p32
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.