I am looking into building a calibration kit for HV differential probes.
The approach I take is to inject the square wave at the input of the differential probe and trim the trimmer caps to compensate the probe till the signal at its output represents the attenuated signal at its input.
This proves challenging considering some probes have an attenuation factor of 1000 or 500. Considering that most signal generators are capable of a maximum peak output voltage of 10 V it means that the outputs signal level is very low.
I drafted some desired specifications, However, none it is a must.
- V(peak) = 1 kV
- f = 1 kHz
- V(ripple) = 1 V
- T(rise) = 1 μs
So far, I have considered using a ±1000 V DC source and an H-bridge. I have not done much HV design, though I have studied power electronics so I have some basics. As usual, details matter therefore before diving into the H-bridge idea. I prefer to ask as very often a design that works on paper is a nightmare to implement.
I did not post any specific questions as I am more looking for suggestions of things to consider before I begin the design process. Perhaps there are already existing modules that I could use.