Pulse Amplifier B611

Summary: This document is a technical schematic for a Digital Equipment Corporation "Pulse Amplifier B611" (Revision E), dated November 16, 1966. The circuit diagram details the configuration of transistors (DEC3639B), diodes (D664 and IN4732), transformers (T1–T4), and various resistors and capacitors used in the amplifier assembly. It includes standard notes regarding component tolerances and provides a reference chart for transistor and diode conversions.