Pulse Amplifier W640

This document is a technical schematic diagram for a Pulse Amplifier (module W640) designed by Digital Equipment Corporation in 1964. The schematic illustrates the electronic circuit configuration, including the arrangement of transistors (DEC6534B and DEC3639B), diodes (D664), transformers (T2071), resistors, and capacitors. It also includes a transistor and diode conversion chart and notes on standard component specifications, such as resistor power ratings and capacitance values.