Hi. I've built a (3 in fact) negative HV power supply continuouly adjustable from 0 to - 8 kV. It uses a CCFL inverter followed by a voltage multiplier and a regulation loop. In order to eliminate regulation peaks I would like to smooth final voltage by using a 10 nF / 15 kV cap (connected to ground) , but ... I not completely sure but it seems that I already did that in the past and the result was the destuction of several diodes ad caps of the voltage multiplier. Is there a condition to fill in order to properly realize this smooting ?