Flip-Flop B211

This document is a schematic diagram for a Flip-Flop B211 circuit, copyrighted by Digital Equipment Corporation in 1965. It is provided for test and maintenance purposes, noting the proprietary nature of the circuits. The schematic illustrates a digital circuit primarily composed of transistors (specifically 2N4258 and DEC3009B types), diodes (D662 and D664), resistors (1/4 W, 5%), and capacitors. The diagram shows various input/output points and multiple voltage supply rails, including +10V, -3V, -3.5V, -2.2V, -4.2V, and -15V. General notes indicate that transistors are 2N4258, diodes are D662, and resistors are 1/4 W, 5%. A "Transistor & Diode Conversion Chart" is also included, listing DEC part numbers with their EIA equivalents.