Diode Gate B136

Summary This document is a technical schematic for the "Diode Gate B136," manufactured by Digital Equipment Corporation in 1969. The circuit is designed to function as a gate, utilizing eight 2N4258 transistors (Q1–Q8) and an array of D664 diodes. The board operates on a power supply range of +10V to -15V and incorporates various resistors (ranging from 1,500 to 68,000 ohms) and capacitors. The schematic includes a reference table for transistor and diode conversions and specifies that the circuit is intended to be used on the etch board for the B134.