Bus Converter M507

This document is a technical schematic for a Digital Equipment Corporation "Bus Converter M507," dated 1966. The circuit diagram illustrates a multi-channel transistor and diode array designed for signal conversion. It includes:

• Circuit Design: A detailed electrical schematic showing transistors (Q1–Q18) paired with diodes (D1–D18), various resistors (R1–R31), and capacitors (C1–C10).
• Power Rails: The circuit is configured to operate across multiple voltage levels, specifically +5V, -0.7V, -1.5V, -3V, and -15V.
• Parts List: A conversion chart and reference table specifying the component types, values, and Digital Equipment Corporation part numbers used in the assembly.
• Purpose: The schematic is designated for test and maintenance use and contains proprietary circuit information.