Hi, I am currently working on high voltage system, where I need to create an impluse at the primary side of a potential transformer. I am trying to charge my circuit to at least 10kV using a half wave series voltage mutliper consisting of capacitors and diodes, and discharging them through spark gap. Currently I had successfully charged my voltage multiplier to 7kV, however, I cant seem to obtain a high voltage impulse. Whenever I obtain an impulse the magnitude of the impulse is not 7kV, instead it is only 100plus volt. Also, after running the experiment for a few more round, I will not be able to obtain impulse anymore, instead there is a lot of noise and sparks. I am wondering if anyone could help me, I would like to know if the problem actually lies in the spark gap used or with the voltage multiplier? May I know that will the cross sectional area of the spark gap play a part in obtaining a sharp impulse? What type of the spark gap is suitable for this experiment? Thank you very much.