Function of the card:
CTRL- Inverter, Power - PNP
Ctrl - inverter, power - pnp
Listed in 1401 SMS card usage
Quad Inverter
Complemented Transistor Resistor Logic (CTRL) is IBM's term for a form of resistor-transistor logic.
Part number: 371487
PCB number: 492793
Used in: 1626, IBM 729V, 1622, IBM 1620
Cap code: None (details)
Symbol: I, A, O
Image courtesy of Henk Stegeman
Pinout:
 |
A O4 B I3 C O3R D O2 E O3C F I4R G I1C H I4C J GND K I1R L O1C M -12V N +12VM P I2R Q I2C R O1R |
IBM 1620 FE Catalog
IBM 1620 Instructional System Diagrams, p485
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.