W300

This document is a proprietary schematic diagram for a Digital Equipment Corporation (DEC) W30C Delay Line, copyrighted 1964. It is provided for test and maintenance purposes.

The schematic details the circuit design, featuring transistors, diodes, resistors, capacitors, and four specific delay line modules (DE1-DE4, identified as DEC No. 330-25E-6). It indicates general resistor specifications (1/4W, 10% unless otherwise noted) and various power supply rails (+10V, -15V, and Ground).

The document also includes:

• A "TRANSISTOR & DIODE CONVERSION CHART" mapping DEC part numbers to EIA equivalents (e.g., DEC3009B to 2N3009, D662 to IN645, D664 to IN3606).
• A reference to a "PARTS LIST A-PL-W300-0-0".
• Drawing and checking personnel (H. Porter, N. Perryman, D. O'Connor) and dates (early December 1964).
• Document identifiers: Number W300-0-1, Revision F, Printed Circuit Revision C.