Function of the card:
CTRL-Emitter Follower PNP
Ctrl - emitter follower pnp
Ctrl-emitter follower pnp
CTRL Emitter Follower PNP
Listed in 1401 SMS card usage
Quad Emitter Follower
Complemented Transistor Resistor Logic (CTRL) is IBM's term for a form of resistor-transistor logic.
Part number: 371032
PCB number: 491155
Used in: IBM 729II/V, IBM 1620, 7030, IBM 1410, IBM 1414 I/O Synchronizer, IBM 1311 Disk, IBM 7090
Symbol:DE
DE: Driver Emitter Follower. A driver, operating on the emitter follower principle, used for power amplification, impedance matching, and isolation without inversion. Often used as a logical element.
Image courtesy of Roberto Gonzalez Rocha
Pinout:
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A PU1 B I1 C I2 D PDR E O4 F I3 G O1E H O3E J GND K PU2 L I4 M -12V N P O2E Q +12V R PU3 |
Coslet data
IBM Standard Modular System, Component Circuits, pp212,213
1410_SMS_VOL_2.pdf, p56
This page created by Ken Shirriff on Wed Sep 15 18:15:09 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.