M508

This document is a proprietary schematic diagram for the Digital Equipment Corporation's M508 Bus Converter, copyrighted in 1968 and intended for maintenance purposes.

It provides a detailed electronic circuit diagram featuring numerous transistors (Q-series), diodes (D-series), resistors (R-series), and capacitors (C-series), operating across various voltage levels including +5V, -0.7V, -1.5V, -3V, -15V, and ground.

The document also includes:

• A comprehensive parts list detailing the types, specifications (e.g., resistance, capacitance, wattage), and Digital Equipment Corporation's internal part numbers for all components used in the M508 Bus Converter.
• A Transistor & Diode Conversion Chart to cross-reference Digital's internal component designations with industry-standard EIA (Electronic Industries Alliance) part numbers.