PULSE AMPLIFIER B611

This document is a schematic diagram for the B611 Pulse Amplifier, copyrighted by Digital Equipment Corporation in 1966. It is provided solely for test and maintenance purposes, emphasizing the proprietary nature of its circuits.

The schematic details the circuit layout, which includes a series of transistors (Q1-Q8), diodes (D1-D29), resistors, capacitors, and transformers (T1-T4). It indicates various input/output points labelled with letters like J, K, F, L, R, S, T, U, O, D, E, N, P, and power connections for +10V and -15V.

General component specifications are provided: transistors are primarily DEC3639B, resistors are 1/4W with 10% tolerance, and diodes are D662, unless otherwise specified for individual components. Capacitors are generally MFD, with specific values like 220±5%MMFD (C2, C5) and .01 (C1, C3, C4, C6, C7, C8). A "Transistor & Diode Conversion Chart" lists DEC and EIA equivalents for various parts, including DEC3639B, DEC-6B, D662, D664, and IN4732.

The schematic is at revision E and was drawn in November 1966.