A Radar Power Supply Without A Voltage Droop

A new principle of fine regulation applied on a high-voltage line supplying a pulsed load (radar tube) is presented. The high-voltage power-supply system is a combination of a single-series resonant converter and an efficient capacitor multiplier in the output stages. The electronic power-conversion system uses a Schwarz converter employing a series resonant circuit for the transfer and control of power. An internal frequency of 35 kHz enhances the power density of the converter model. This model provides 16 kV for the helix-cathode circuit of a klystron with an accuracy of 0.50/00 (per mille) and 11 kV for the collector-cathode circuit with an accuracy of 5 percent. The presentation is supported by experimentally acquired data. The improved high-voltage power supply should lessen the problems associated with high-voltage transformers and the high accuracy required for the voltage control for the helix-cathode circuit to avoid distortion in the returning signal of a space-borne radar system.