G206

This document is an electrical schematic titled "MEMORY SELECTOR G206," copyrighted by Digital Equipment Corporation in 1965. It is explicitly stated as proprietary and intended solely for test and maintenance purposes.

The schematic details a circuit primarily composed of four identical or highly similar stages, each featuring input diodes, a transistor driving a pulse transformer, and two output transistors. Numerous resistors and capacitors are integrated throughout the circuit, operating with a -15V supply and ground connections.

Accompanying the schematic are a comprehensive parts list, detailing Digital Equipment Corporation (DEC) part numbers and specifications for transformers, transistors, resistors, diodes, and capacitors. A "Transistor & Diode Conversion Chart" provides cross-references for some diodes to EIA standard numbers. The document's drawing number is G206-0-1, with an overall revision 'D' and a printed circuit revision 'B'.