Level Amplifier W513

This document contains a schematic for the Digital Equipment Corporation Level Amplifier W513. It includes component specifications, such as transistors (DEC 2894-1B and 2N3605) and diodes (D-664), and features a transistor and diode conversion chart. The documentation specifies that it is for test and maintenance purposes and notes its application for use with solid-state DECtape TU55 controllers featuring relay drivers.