Negative Level Amplifier W610

This document is a technical schematic for the Digital Equipment Corporation Negative Level Amplifier (model W610). It provides the circuit diagram for three amplifier stages (Q1, Q2, and Q3) utilizing DEC-2894-3B transistors, various resistors, and diodes. The schematic includes a comprehensive parts list detailing component values, specifications, and part numbers for resistors and diodes, as well as a transistor and diode conversion chart. The document is dated 1964 and is intended for test and maintenance purposes.