W513

This document is a schematic diagram for the Digital Equipment Corporation (DEC) Level Amplifier W513 (part number CS W513-0-1, Revision E), copyrighted in 1965.

It is provided for test and maintenance purposes and explicitly states its proprietary nature. The schematic details the electronic circuit, featuring multiple transistors (primarily DEC 2894-IB or 2N3605), diodes (primarily D-664 or D-662), resistors, and capacitors.

Key specifications and notes include:

• Default component values: Transistors are DEC 2894-IB, Diodes are D-664, and resistors are generally 10,000 ohms, 1/4W, 10% unless otherwise indicated.
• A Transistor & Diode Conversion Chart is provided, listing DEC part numbers and their EIA equivalents.
• The circuit uses power supplies of +10V(A) and -15V, along with a C GND (ground).
• A specific note indicates the schematic is "TO BE USED WHEN SOLID STATE DEC TAPE TU55 IS CONNECTED TO A CONTROL THAT HAS RELAY DRIVERS. (550,551,552)".