R141

This document is an electrical schematic titled "DIODE GATE R141," created by Digital Equipment Corporation and copyrighted in 1964. It is provided solely for test and maintenance purposes, with the circuits noted as proprietary.

The schematic illustrates a circuit composed of:

• Multiple Diodes: Ranging from D1 to D25. Unless otherwise indicated, diodes are D664 (EIA equivalent: 1N3606), with some specified as D662 (EIA equivalent: 1N645).
• Resistors: R1 through R11. Unless otherwise indicated, resistors are 1/4W, 5%, with many specified at 15,000 Ohms. Other values include 27,000 Ohms (R8), 100,000 Ohms (R10), 1,500 Ohms (R11), and 7,500 Ohms (R9).
• Capacitor: C1, specified as .01 MFD.
• Transistors: Q1 (DEC3009B, EIA equivalent: 2N3009) and Q2 (DEC3639B, EIA equivalent: 2N3639).

The circuit features numerous inputs labeled E through V. It includes power connections for +10V (A), -15V (B), and Ground (C), as well as an output labeled D. A conversion chart is provided for Digital Equipment Corporation's component designations to standard EIA equivalents. The document is at Revision F.