W505

This document is a proprietary schematic for a "LOW VOLTAGE DETECTOR W505" (Part Number W505-0-1, Revision B), copyrighted by Digital Equipment Corporation in 1965.

It provides:

• A circuit diagram detailing the arrangement of transistors (Q1, Q2), diodes (D1-D7), resistors (R1-R8), and a capacitor (C1), with connections to +10V, -15V, and ground.
• A parts list specifying the reference designation, description (e.g., transistor types, resistor values and tolerances, diode types, capacitor specifications), and part numbers for each component.
• A transistor & diode conversion chart that cross-references Digital Equipment Corporation (DEC) part numbers with their Electronic Industries Alliance (EIA) equivalents.

The schematic is explicitly furnished only for test and maintenance purposes, and the circuits are proprietary. It was drawn in March 1965 by I. Hahn, checked by N. Perryman, and engineered by N. Boisse.