Power Supply 783A

This document is a technical schematic for the Digital Equipment Corporation Power Supply 783A, dated May 17, 1965.

Key information includes:

• Circuit Design: A schematic diagram detailing the transformer, resonant capacitor, DMI diode module, filter capacitors (C1 and C2), and resistors required to produce +10V and -15V outputs.
• Input Configuration: A table listing jumper settings to accommodate various input voltages (112.5V, 123.5V, 195V, 220V, and 235V).
• Operating Specifications: It outlines voltage regulation limits (+9.5V to +11V and -14.5V to -16V) and current loading limitations.
• Load Balancing: The document specifies current limits for both single-side and dual-side loading and provides a mathematical equation to manage the sum of output currents.