Pdp-8 I Power Supply 704

This document is a technical schematic for the Digital Equipment Corporation PDP-8/I Power Supply (Model 704). It provides a detailed wiring diagram showing the input voltage configurations (ranging from 100V to 240V), transformer connections, and the internal circuitry including rectifiers, capacitors, and relays. The document also features a comprehensive parts list, identifying specific electrical components such as transformers, cooling fans, circuit breakers, and capacitors, along with their respective reference designations and part numbers. Additionally, the schematic includes safety notes regarding the relay specifications and maintenance warnings.