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Research Capabilities
Power supply design

Design compatible with aviation power specifications

  satisfying MIL-STD-704 (LDC, SAC, TAC) specifications and high altitude characteristics
  Normal/Abnormal transient voltage
  Power interrupt(hold-up)
  Starting voltage transient
  Emergency voltage
  Power failure
  Phase reversal
  Total ripple

Digital PWM control design

  High-speed digital PWM control using DSP, etc.
  Sine wave inverter design with 3% or less distortion rate
  Variable output power supply system
  high efficiency phase-shift switching technique

Power module design

  High-efficiency, high-reliability power module design that takes into account aviation power characteristics, etc.
  Small structure/thermal design
  Active clamp synchronized forward topology that takes into account a wide input range
  Secondary PWM control design for dynamic load characteristics
  Active reset and synchronized rectifier design to ensure high efficiency
  Multilayer PCB to remove noise

Power monitoring/protection design

  Rapid protection of the power supply and system (load) by monitoring input and output status in irregular input power
  Input over-/low-voltage, over-current/short-circuit current protection
  input surge/counter voltage protection
  Output over-/low-voltage, over-current/short-circuit current protection
  I/O status monitoring (TTL)
  over temperature monitoring
  I-BIT, P-BIT, C-BIT, M-BIT design
  remote control and status communication

High voltage power design

  High-density HVPS design that can stably run various TWTs
  Pre/Post-regulator technology
  serial phase resonance technology
  Phase-shifted power conversion technology
  Multi-level (8-level) high voltage transformer design and production technology
  2-stage high resolution feedback technology
  Structure/material/potting technology for high altitude high-voltage insulation
  single-phase rectifier circuit diode module design technology
  Frequency synchronization by external synchronizing signal
  Safety technology for stable operation of TWT and HVPS

High PRF Grid / FE Modulator design

  Modulator design for stable operation of pulse and CW TWT
  Precise on/off bias voltage generation
  fast totem-pole driver switching technology
  High-voltage heater/modulation feedback technology
  Normal/quick start heater power generation technology
  Initial excessive heater current suppression technology control to protect TWT
  Minimizing heater voltage drift by temperature change using special technic
  Safety technology for safe operation of TWT