Power Supplies Types 783, 783A

This document provides specifications and operational guidelines for the Type 783 and 783A power supplies, which are rugged units designed for mounting in standard 19-inch racks.

Key highlights include:

• Output: Provides +10V and -15V DC, with specific load current capacities depending on whether one or both channels are active.
• Operational Constraints: A specific formula, $5(I{10}) + 6(I{15}) \leq 53$, must be followed to determine the combined permissible output current for both channels. Additionally, at least 1.0 ampere must be drawn from the -15V channel to ensure proper load regulation.
• Electrical Specs: Features line and load regulation within narrow voltage tolerances (e.g., +9.5V to +11.5V for the 10V output) and identifies peak-to-peak ripple limits for both outputs.
• Mechanical Specs: The unit is 19" wide, 10-1/8" high, and 6" deep, finished in Chromicoat with screw terminal connections.
• Model Variance: The Type 783A is identical to the 783, but utilizes a 50-cycle transformer.

Page two provides a technical schematic for maintenance purposes, further detailing the voltage limits and current constraints for different load conditions.