Low Voltage Detector W507

Summary: This document is a technical schematic for the "Low Voltage Detector W507" produced by the Digital Equipment Corporation (dated 1970). The circuit utilizes multiple operational amplifiers (E1–E9), including a DEC 74H30 integrated circuit, to monitor and detect voltage levels. The diagram details the electrical interconnects between various resistors, capacitors, and diodes (such as the D662, IN753A, and 2N4258 transistors). It also includes a diode conversion chart and standard technical notations regarding component specifications, such as resistor tolerances (1/4W, 5%) and capacitor ratings.