Function of the card:
SDTRL-Driver, Relay Thyratron
Triple 2 Input NAND SCR Relay Driver
Saturated Drift Transistor Resistor Logic (SDTRL) is a form of resistor-transistor logic using faster drift-field transistors.
Part number:372550
Symbol:DP
DP: Driver, Power. A power driver used to drive Into multiple bases.
Transistor type:077
Pinout:
 |
A I1 B I1 C O1 D I2 E I2 F I3 G O3 H O2 J GND K L M N +12VM P I3 Q R |
This page created by Ken Shirriff, 2015.
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. Images courtesy of Randall Neff. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.
Creation time: Tue Mar 03 23:40:34 2015.