Pulse Transformers

In a repetitive power conditioning system it is often necessary to transfer energy from one capacitor to another at a different voltage level. This resonant energy transfer can be accomplished using a pulse transformer. The unit shown is used to transfer the energy from a 3 µF capacitor at 112.5 kV to a 13 nF capacitor at 1.5 MV. The pulse repetition rate is 0.2 Hz; much higher repetition rates are possible. The smaller transformer is a 175 kV trigger transformer with a 120 nsec rise time.