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High Voltage Converter and Grid Modulator

Espey developed this power supply for the F-111 coherent 2.75 kW TWT radar transmitter system for a prime military contractor program. Espey designed the high voltage module and has delivered several hundred-production units. The small, solid state, high voltage module includes a 12 kV power supply with grid modulator. The unit is driven by a 30 kHz square wave 440 V pk-pk.

Electrical Specifications

  • Input Voltage: 440 V pk – pk 30 kHz
  • DC Output Voltages: -10 to -12 kV
  • Pulse Current: 1.8 Amps
  • Max PRF: 15 kHz
  • Power Consumption: 200 Watts

Mechanical Specifications

  • Liquid filled Convection cooled
  • Size: 8” X 7.3” X 7.9”
  • Weight: 26 lbs.
  • Sealed steel case with integral bellows


  • Qualified to airborne environment extremes
  • Qualified to MIL-E-5400T
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