Mains Interface Circuit Design for Traveling Wave Tube Amplifier

This paper describes the design of a power supply intended for a traveling wave tube (TWT) power supply. For the faithful operation of the TWT amplifier, constant DC voltages are required for the operation of the collector supply, heater supply, helix supply, and control grid. In this work, the mains interface circuit for a TWT amplifier is designed and simulated using Proteus 8.9. For the removal of the ripples in the main power supply, a two-inductor based choke filter is connected in series to get ripple-free signal. The mains interface power supply generates three DC output voltages typically 300V, 150V, and +12V.