Function of the card:
CTDL Power Inverter "P" Type
CTDL-Power Inverter āPā Type
CTDL Power Inverter NPN
Listed in 1401 SMS card usage
Complemented Transistor Diode Logic (CTDL) is IBM's term for a form of diode-transistor logic.
Part number: 371676
Cap code: None (details)
Symbol: IP
IP: Inverter, Power. Performs function of an inverter white also driving a line.
Image courtesy of Randall Neff
1410_SMS_VOL_2.pdf, p107
IBM Standard Modular System, Component Circuits, p233
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.