W808

This document is a proprietary schematic drawing (W808-0-1, Revision B) titled "RELAY WE 08," copyrighted by Digital Equipment Corporation in 1967 and intended for test and maintenance purposes only.

The schematic illustrates a relay circuit featuring two transistor-driven relays (Q1 controlling K1, and Q2 controlling K2). Inputs (F, E, D, T, U, V) are fed through diode networks to control the bases of transistors Q1 and Q2, which in turn energize the relay coils. The circuit operates with +10V, GND, and -15V power supplies.

General component specifications are provided: resistors are 1/4W, 10%; relays are Wheelock 268-2A-12; and transistors are DEC6534D. A conversion chart translates Digital Equipment Corporation's proprietary component numbers to EIA equivalents, such as DEC6534D to MPS6534 (transistor), D662 to IN645 (diode), and D664 to IN3606 (diode).