This document is a technical schematic for a Digital Equipment Corporation circuit board, specifically the "Dec to Ibm 360 Bus Driver" (Model W692). The schematic details a multi-stage transistor and diode arrangement designed for bus driving applications. Key technical specifications included are:
- Components: The circuit utilizes DEC3009B transistors, D664 diodes, and specific resistor/capacitor values (as noted in the "Unless Otherwise Indicated" section).
- Power Rails: The design operates using +10V, ground, -1.8V, and -15V supply rails.
- Purpose: The document is explicitly stated as being for test and maintenance purposes only, noting that the circuits are proprietary to the Digital Equipment Corporation (dated 1967).
- Cross-Reference: It includes a "Transistor & Diode Conversion Chart" mapping internal DEC component numbers (e.g., DEC3009B, D662, D664) to industry-standard EIA numbers (e.g., 2N3009, 1N645, 1N3606).