Function of the card:
Alloy clutch magnet dr.
Clutch magnet driver
Germanium alloy transistors were an early type of transistor, faster than the earlier grown-junction transistors.
Part number: 372245
Customer Eng reference number: 734342
PCB number: 484997 , hole pattern: 491329
Used in: IBM 1443 Printer, IBM 2821 Control Unit
IBM 2821 CCD, p22
This page created by Ken Shirriff on Wed Sep 15 18:15:11 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.