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A self-adjusting sinusoidal power source for a high-frequency AC distributed power bus is presented and tested experimentally. The power inverter is based on a current-fed push-pull parallel-resonant inverter (CFPPRI), which includes a variable inductor and a frequency tracking mechanism to insure soft switching. The power source can drive reactive, non-linear, switched and non-constant loads with a sinusoidal signal at a desirable frequency. The response of the power driver to a 60% to 100% step in the load power was found to stabilize within three high frequency cycles.