W510

This document is a schematic diagram for the Digital Equipment Corporation (DEC) Positive Level Converter, model W510 (Part Number W510-0-1, Revision B).

Key details include:

• Purpose: Furnished for test and maintenance purposes, with the circuits being proprietary to DEC and copyrighted in 1964.
• Circuit Components: It details an electronic circuit comprising multiple transistors (Q1, Q2, Q3, identified as DEC2894-1B), numerous resistors (R1-R10 with specified values and tolerances), diodes (D1-D31), and a capacitor (C1).
• Specifications: Unless otherwise indicated, resistors are 1/4W, 10%, and diodes are D-664.
• Power & I/O: The diagram shows connections for +10V (A), -15V (B), and Ground (C), along with various labeled input/output points (e.g., J, V, P, O, K, D).
• Conversion Chart: A "Transistor & Diode Conversion Chart" lists DEC part numbers (DEC2894-1B, D662, D664) and their EIA equivalents (NONE, IN645, IN3606).
• Date: The document indicates a drawing date of 10-6-64.