Power Supplies Types 783, 783A

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

Key details include:

• Performance: The unit provides a +10V and a -15V output. Operation is dependent on load balancing, with the combined output currents constrained by the equation: 5(I10) + 6(I15) = 53.
• Operating Limits: When both outputs are loaded, the +10V channel can supply 0 to 7.0 amperes, and the -15V channel can supply 1.0 to 8.0 amperes. At least 1.0 ampere must be drawn from the -15V channel for proper regulation.
• Technical Specifications: The unit features a Chromicoat finish and utilizes screw terminals and AMP "Faston" tabs for connections. Line/load regulation keeps voltages within specified tolerances (±9.5 to 11.5V for the 10V channel; -14.5 to -16.5V for the 15V channel).
• Variations: The Type 783A is identical to the 783 but is equipped with a 50-cycle transformer.