+5V Regulator GB30

This document is a technical schematic and parts list for a +5V regulator (model GB30) manufactured by Digital Equipment Corporation.

The schematic details the circuit design, which includes:

• Input/Output: A +15V input providing a regulated +5V output.
• Key Components: The design incorporates a voltage reference, a noise filter, a current limit and compensation stage, and a crowbar circuit for overvoltage protection.
• Monitoring and Protection: The circuit features a "Power On" detector, a crowbar monitor, and a shutdown function.
• Specifications: Unless otherwise noted, resistors are 1/4W 5%, capacitors are 0.1uF 100V 20%, and transistors are specified as DEC3009B.
• Parts List: The document includes a comprehensive table (items 1 through 36) listing the specific DEC part numbers and descriptions for the resistors, capacitors, diodes, transistors, and structural components (like etched circuit boards and connectors) required to build the module.