HIGH VOLTAGE POWER SUPPLY FOR TRAVELING WAVE TUBE AND STABILIZATION METHOD OF OUTPUT HIGH VOLTAGE THEREOF

摘要

The present invention relates to a high voltage power supply (switching mode high voltage power supply) capable of rapidly compensating a cathode voltage even when the cathode voltage is lowered or increased due to abrupt load fluctuation of the traveling wave tube, thereby minimizing cathode voltage fluctuation and its output high voltage stabilizing method A high voltage power supply for supplying a voltage to the traveling wave tube according to an embodiment of the present invention includes: a PWM controller for generating a pulse width modulation (PWM) pulse for generating a high voltage; A pulse transformer for transmitting an isolated switching pulse using the generated pulse; A pulse amplifier for amplifying and converting the switching pulse; A high voltage transformer for boosting the amplified pulse to a high voltage pulse; A high voltage rectifying section for rectifying the high voltage pulse; A high voltage smoothing unit for smoothing the rectified high voltage to a DC cathode voltage; A high voltage stabilizer for controlling and stabilizing the smoothed cathode voltage; And an error amplifier which generates a voltage for varying the pulse width of the PWM controller according to the control voltage of the high voltage stabilizing part.