Function of the card:
ETM Delay Circuit
Listed in 1401 SMS card usage
One Shot controlled Reed Relay (0.4 sec retriggerable)
Part number: 372687
Cap code: None (details)
Symbol: O-SS/R
Pinout:
 |
A I1 B T1 C R1-2A D R1-1A E PD F R1-1AR G R1-1B H R1-2B J GND K L M -12V N P CAP Q DC R |
National Museum of Computing.
Coslet data
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.