W532

This document is a proprietary circuit schematic for the Digital Equipment Corporation (DEC) Difference Amplifier W532, copyrighted in 1966. It is explicitly stated that the schematic is for test and maintenance purposes only, and the circuits are proprietary.

The schematic illustrates an electronic circuit featuring:

• Transistors: Q1-Q8 (DEC 3568 and DEC 6534C, with EIA equivalents 2N3568 and MPS6534).
• Resistors: R1-R24 with various values (e.g., 100, 1,000, 3,000).
• Capacitors: C1-C8 with specific values (e.g., 56 MMFD, 196 MF).
• Power Rails: +10V (A), -15V (B), and Ground (C).

General specifications for components are also provided:

• Most resistors are 1/4W, 5%.
• "MF" (Metal Film) resistors are 1/8W, 1%.
• Capacitors are generally 3.9 MFD, 10% at 10V (though specific values appear on the diagram).
• The default transistor type is DEC6534C, with DEC6534B noted as a possible substitute.

The document includes a Transistor & Diode Conversion Chart for DEC part numbers to EIA equivalents, and a revision history, indicating the current revision as 'D'.