Memory Selector G2j9

Summary: This document is a technical schematic for a Digital Equipment Corporation (DEC) Memory Selector circuit (G219-0-1). The diagram details two identical horizontal circuit paths, each containing four stages of transistor-transformer logic. The circuit utilizes MM999 transistors, D-672/D-664 diodes, and T-2071 transformers. The schematic outlines the electrical signal paths (labeled with inputs like AV, AU, AS, AD and BV, BU, BS, BD) and specifies component ratings, including 1/4W 10% resistors and various capacitor values, for the purpose of testing and maintenance.