DEVELOPMENT OF HIGH-VOLTAGE STEP-UP TRANSFORMER AS A SUBSTITUTE FOR AMARX GENERATOR

A new type of pulse transformer has been developed as a substitute for a Marx generator. In the transformer amorphous metallic cores are uti lized with windings of cylindrical conductors. As a result, low leakag e inductance is realized with high breakdown strength. The coupling co efficient of the transformer is estimated to be more than 0.99. By usi ng the transformer of winding ratio of 1:3, a Blumlein pulse forming l ine of capacitance 20 nF is successfully charged up to 270 kV by using a capacitor bank of 240 nF, 90 kV. High speed charging of charging ti me=250 ns is realized with high efficiency of energy transfer (energy transfer efficiency from the capacitor bank to the pulse forming line was evaluated to be 76%). (C) 1997 American Institute of Physics.