The construction technique and resulting electrical performance of high‐voltage impulse transformers for ’’pulser‐sustained’’ laser applications is presented. The compact structures exhibit excellent rise‐time and power‐handling capacity over a wide range of operating conditions. The distributed core geometry permits impulse power operation at several megawatts within the kilowatt average power regime. Reliable performance at a repetition rate of up to 40 kHz has been demonstrated. These simple condensed winding and torous core devices can be constructed in minutes and at negligible cost.