857 Power Control

This document is a technical drawing directory and engineering specification package for the Digital Equipment Corporation 857 Power Control system. It provides a comprehensive set of electrical and mechanical documentation, including:

• System Diagrams: Detailed schematics illustrating power distribution, logic timing, and flow sequences (such as normal power-on/off, power dips, and failures).
• Assembly Details: Wiring diagrams and component lists for the 857 Power Control and the 858 Auxiliary Power Control units.
• Functional Logic: Logic gate diagrams for controlling power flow, remote/local switching, thermal monitoring, and restart sequences.
• Connector Specifications: Pin assignments for wiring harnesses and connections to peripheral devices.
• Parts Lists: Bills of materials specifying resistors, capacitors, and hardware used in the assembly of the power control modules.

The documentation serves as a reference for the maintenance, assembly, and logical operation of the power management infrastructure for the associated computer hardware.