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AC/DC Power Converter Assembly (Ground Based Artillery Mobile Radar)

This AC/DC Power Supply was developed to power a HUM-V mounted radar transmitter and receiver. This system consists of a 19” rack, three (3), hot-swappable, AC/DC converters, each delivering a regulated output of 90A at 42VDC as the main power supplies (Main PS), and two (2) multi-output AC/DC converters, as low voltage power supplies (LVPS). It’s modular design allows for easy assembly and reassembly if necessary.

Electrical Specifications

  • Input: 208/120 VAC, 3 phase, 60Hz
  • Output: LVPS: (2 power supplies) 5A @ +5VDC, 0.5A@ -15VDC, 12.0A@ +15VDC, 9.0A@ +28VDC Main PS: (3 power supplies) 90A@ +42 VDC
  • Efficiency: LVPS: 72% Main PS: 80%

Mechanical Specifications

  • Size and Weight:
    • Weight: 90 lbs.
    • Dimensions: 19″ x 7″ (4U) x 23.5″
    • Operating Temperature: 0 to 50°C
    • Operating Altitude: 0 to 10,000 ft.
  • Environmental:
    • Operating Temperature: 0 to 50°C
    • Storage Temperature: -40 to 68°C
    • Operating Altitude: Sea Level to 10,000ft
    • Transported Altitude: Sea Level to 50,000ft


  • Redundancy with High Field Reliability
  • Over and Under Voltage Protection
  • Over and Under Load Protection
  • Over Temperature Protection
  • Front Panel Test Points For Monitoring Output Power
  • Modular Design for easy assembly and repair
  • Forced Air Cooling Using Internal Fans
  • Bi-conversion, SMPS design providing power factor correction (.99 leading), and EMI compliance to MIL-STD- 461, and MIL-STD-462
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